Size Chart
×
King Engine Bearings MB5281SI is the exact main bearings set shown in this listing. Select it by engine application, bearing position, measured crankshaft journal and housing bore, size designation, material or coating, and manufacturer part number. Engine machining measurements must be confirmed before ordering.
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2005-2007 | Avanti | Avanti | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2003-2008 | Ford | E-150 | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2003-2005 | Ford | E-150 Club Wagon | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1999-2002 | Ford | E-150 Econoline | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1999-2002 | Ford | E-150 Econoline Club Wagon | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2003-2008 | Ford | E-250 | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1997-2004 | Ford | Expedition | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2002-2010 | Ford | Explorer | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2007-2010 | Ford | Explorer Sport Trac | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1997-2004 | Ford | F-150 | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2009-2010 | Ford | F-150 | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1997-1999 | Ford | F-250 | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1996-2010 | Ford | Mustang | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2003-2005 | Lincoln | Aviator | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1995-2002 | Lincoln | Continental | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1993-1998 | Lincoln | Mark VIII | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2003-2004 | Mercury | Marauder | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2002-2010 | Mercury | Mountaineer | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 1999-2000 | Panoz | AIV Roadster | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2001-2007 | Panoz | Esperante | Confirm engine code, displacement, journal size, bearing position, and machining specification |
| 2001-2002 | Qvale | Mangusta | Confirm engine code, displacement, journal size, bearing position, and machining specification |
Specifications
| Brand | King Engine Bearings |
|---|---|
| Manufacturer Part Number | MB5281SI |
| Bearing Type | Main Bearings |
| Size | STD |
| Finish or Coating | Bearing construction identified by exact part number |
| Condition | New |
What's Included
One new King Engine Bearings main bearings set in the exact size and configuration identified by part number MB5281SI. Gaskets, fasteners, assembly lubricant, measuring tools, and machine work are not included unless expressly listed.
About King Engine Bearings
King has specialized in engine bearings since 1960 and produces OE replacement and performance main, connecting rod, camshaft, and thrust bearing solutions. Correct selection depends on exact engine application, journal and housing measurements, material, coating, clearance target, and part-number suffix.
Related King Engine Bearings Products
Frequently Asked Questions
Will King Engine Bearings MB5281SI fit my engine?
Match the listed year, make, and model where available, then confirm the exact engine code, displacement, crankshaft journal dimensions, housing bore, bearing position, thrust location, and part-number suffix.
Does King Engine Bearings MB5281SI fit a standard-size crankshaft?
The listed size designation is STD. Do not assume standard size from the vehicle application. Measure every journal and compare the finished crankshaft dimensions with the exact bearing specification before ordering.
How should bearing clearance be checked for King MB5281SI?
Have a qualified engine builder measure the housing bore and each crankshaft journal with calibrated tools, install the dry bearing shells in their correct positions, torque the caps to specification, and verify oil clearance against the engine and bearing requirements.
Installation Instructions
Installation requires qualified engine-machining and assembly practices. Identify every cap and bearing position, inspect and measure housing bores and crankshaft journals, verify surface finish and thrust clearance, clean all oil passages, install each shell without contamination or damage, align oil holes and locating features, lubricate as specified, torque fasteners in the correct sequence, verify oil clearance and crankshaft rotation, then prime the lubrication system before initial startup.
Shop Ford E-150 Club Wagon brake, cabin and engine-service references at Black Ops Auto Works. Compare DFC front rotors and rear drums, Husky WeatherBeater floor-liner applications and Ford engine components. Start with a specific service need and your van’s exact production, engine and installed equipment.DFC Brake-Service ChoicesDFC titles include 1994–2003 E-150 front GeoSPEC rotors and a 2000–2003 E-150 Econoline Club Wagon rear drum. Confirm exact production, axle, installed brake assembly and component dimensions. Other-model pad titles require explicit E-150 coverage. Review supplied quantity and remaining pads, shoes or hardware separately when building a service order.Cabin Protection and Chassis ServiceThe Husky WeatherBeater title names 2005–2023 Ford Econoline floor liners. Confirm exact vehicle, floor shape, retention and supplied seating areas rather than assuming all rows are included. SPC camber/caster sleeves offer different correction specifications; match the actu...
View Ford E-150 Club Wagon Parts and Accessories Products
Shop Ford E-150 Econoline Club Wagon exhaust, brake and engine-service references at Black Ops Auto Works. Compare an Econoline BRExhaust kit, DFC brake components, ignition references and drivetrain parts around your van’s actual production and equipment. Keep routine service and larger powertrain changes as clearly defined purchasing plans.Exhaust Kit or Brake-Service OrderThe BRExhaust title names 1987–1996 Econoline E-150/E-250 coverage; confirm exact engine, body and exhaust configuration, installed connections and kit contents. Universal converter references need separate emissions and installation checks. DFC front-rotor and rear-drum titles cover different E-150 production ranges, so match actual axle and brake dimensions before selecting components.Engine Families and Induction OptionsCOMP Cams pushrods and Ford engine components span six-cylinder and V8 applications. Edelbrock titles include 302 induction and a 650 CFM manual-choke carburetor, while Clevite and Cometic ref...
View Ford E-150 Econoline Club Wagon Parts and Accessories Products
Shop Ford E-150 Econoline exhaust, cooling, brake and axle references at Black Ops Auto Works. Compare BRExhaust applications, a CSF radiator reference, DFC brake components and Yukon axle-service choices. Choose the job first, then match exact year, engine, body and installed assemblies.Exhaust and Cooling-Service ChoicesThe BRExhaust title names 1987–1996 Econoline E-150/E-250 coverage. Match full engine, body and exhaust application and review the supplied kit components. The CSF radiator title names 1992–1996 E-150 Econoline 5.0L; confirm complete application, mounting, hose connections and transmission-cooling requirements. Universal converters need separate legal-application and installation review.Brake and Chassis ServiceDFC rotor, drum and hardware references cover different production or model descriptions. Match actual axle, caliper or drum assembly and dimensions. SPC sleeves require the correct suspension application and alignment correction. A Bilstein title naming E-3...
View Ford E-150 Econoline Parts and Accessories Products
Shop Ford E-150 brake, suspension and cabin-protection references at Black Ops Auto Works. Compare Bilstein 4600 rear-shock applications, DFC brake-service choices and Husky or Covercraft interior protection for your van’s daily work. Match year, body, installed brakes and suspension before selecting parts.Bilstein Rear Shocks and Brake ServiceThe Bilstein rear-shock title names 2008–2013 E-150 coverage within a shared E-Series application. B6 4600 is intended for stock ride-height use; confirm actual suspension, mounting and full manufacturer application. DFC titles include older front-rotor and rear-drum references plus an E-Series rear pad-and-hardware kit. Match axle, actual brake assembly and dimensions rather than treating drums and disc-brake parts as one service package.Husky Cargo Mats and Covercraft Seat ProtectionThe Husky Guardian Comfort listing names a 2006–2010 E-Series full cargo-van mat. The product family provides cushioning over cargo-floor surfaces and a washable...
View Ford E-150 Parts and Accessories Products
Shop Ford E-250 brake, suspension and cargo-protection references at Black Ops Auto Works. Compare Bilstein rear shocks, DFC E-Series brake service and Husky or Covercraft interior protection around your van’s working needs. Match actual year, body, brakes and suspension before selecting parts.Rear Shocks and Brake ServiceThe Bilstein 4600 rear-shock title names 1992–2013 E-250/E-350 coverage. Confirm exact application and installed suspension; B6 4600 is intended for stock ride-height use. The DFC heavy-duty rear pad-and-hardware title names E-150, E-250 and E-350 Super Duty applications. Match complete production, caliper, pad shape and rotor specifications. Other-model parking-brake titles need explicit E-250 coverage.Cargo Floor and Front-Row ProtectionThe Husky Guardian Comfort full cargo-mat title names 2006–2010 E-Series applications. This family offers cushioned cargo-floor protection with a washable surface; confirm exact body length, floor and supplied coverage. Covercraft...
View Ford E-250 Parts and Accessories Products
Shop Ford Expedition brake, intake, suspension and accessory references at Black Ops Auto Works. Compare Injen intake applications, DFC or Brembo brake service, Bilstein shocks and Husky floor or hood protection. Match exact generation, engine, drivetrain and standard or extended body before choosing your parts.Injen Airflow and Engine-Service ChoicesThe Injen Power-Flow title names 2018–2024 Expedition coverage within a shared Ford application. Confirm exact engine, sensors, mounting and supplied intake components. J&L separator and other engine-service references require their own complete Expedition application. A universal MagnaFlow muffler or converter needs the correct dimensions, connections and separately planned exhaust installation.Brembo, DFC and Baer Brake ReferencesBrembo front and rear pad titles, DFC rotors and pad kits, and Baer rear-rotor references cover different production descriptions. Match axle, caliper, pad shape, rotor dimensions and exact manufacturer a...
View Ford Expedition Parts and Accessories Products
Shop Ford Explorer exhaust, brake, suspension and drivetrain references at Black Ops Auto Works. Compare Thermal R&D and AWE ST exhaust choices, Borla 2.3L applications, brake-service systems and suspension components for your driving goals. Start with exact generation, engine, drivetrain and trim so ST, Sport, Tremor and Hybrid applications remain distinct.Cat-Back, Axle-Back and Service Exhaust ChoicesThermal R&D and AWE titles name Explorer ST cat-back applications, with separate system sizes and tip choices. Gibson axle-back and older 4.0L cat-back references, MBRP mid-pipes and Borla 2.3L S-Type applications describe different engine and installation scopes. Match full production, engine, body, connections and supplied pipework before comparing sound preference or finish. Separate tip references are not complete exhaust systems.Brake Service or a Defined Upgrade SystemThe selection includes front and rear stainless brake-line references, an Explorer rear brake-system li...
View Ford Explorer Parts & Accessories Products
Shop Ford Explorer service and upgrade references at Black Ops Auto Works. Build a parts plan around exhaust replacement, brake service, suspension work or a defined engine repair. The selection spans multiple generations and trims, from older 4.0L applications to later EcoBoost and ST references, so match the actual vehicle before choosing components.Engine-Specific Exhaust and AirflowBRExhaust 3.5L service-kit titles, Gibson older 4.0L exhaust, Borla 2.3L applications and Thermal R&D ST systems cover distinct installation needs. Match exact engine, production, body, outlet layout and existing connections before comparing a complete system, mid-pipe or separate tips. Oil separators, throttle bodies and intake references need their own engine and interface application checks.Brake-Service Components and SystemsCompare stainless brake-line references, EBC front rotors, PowerStop rear kits and Brembo pad applications against the installed brakes. Match axle, actual caliper, pad sh...
View Ford Explorer Parts and Accessories Products
Shop Ford Explorer Sport Trac exhaust, brake, ignition and axle references at Black Ops Auto Works. Compare a Gibson 4.0L cat-back application, DFC rotor and EBC rear-pad references, plus Yukon axle-service choices. Match the truck’s exact production, engine, drivetrain and installed assemblies before selecting components.Gibson Exhaust and Brake-Service ChoicesThe Gibson stainless cat-back title names 2007–2008 Sport Trac Limited 4.0L coverage. Confirm exact engine, body, outlet and connections and review supplied pipework. DFC front-rotor titles name 2001–2005 Sport Trac, while an EBC rear-pad title names a later 4.0L application. Match actual axle, caliper, pad shape and rotor dimensions independently rather than combining different production references as one brake kit.Yukon Axle and Engine-Service ReferencesYukon titles include Ford 8.8-inch IRS and Model 35 IFS overhaul references, gear sets and service components. Identify actual front/rear housing, carrier, spline, ratio, b...
View Ford Explorer Sport Trac Parts and Accessories Products
Shop Ford F-150 suspension, engine and truck-accessory references at Black Ops Auto Works. Compare ICON suspension systems, Bilstein or Fox shocks, engine-specific airflow parts and bed or cab accessories around the way you use your truck. Identify generation, engine, drivetrain, cab, bed and any Raptor or Lightning configuration before choosing parts.Suspension Systems or Individual ShocksICON titles distinguish different stages, arm configurations and production ranges. Bilstein front-kit and Fox coilover or rear-shock references cover separate drivetrain and height applications. Define the desired stance and intended use, then match actual suspension and travel requirements with the installer. A component box, rear lift part or shock pair is separate from a complete system with all required arms, brackets and alignment hardware.Engine-Specific Airflow and ServiceInjen and Roush intake references name different engines and production ranges, while aFe Raptor R and GSC Coyote camsh...
View Ford F-150 Parts and Accessories Products
Shop Ford F-250 exhaust, cooling, brake and chassis references at Black Ops Auto Works. Compare Borla gasoline exhaust applications, Powerstroke service components, Bilstein reservoir shocks and Wilwood front-brake references for a defined truck build or repair. Match exact generation, engine, drivetrain, cab, wheelbase and installed suspension first.Gasoline Exhaust or Powerstroke Cooling ServiceThe Borla S-Type cat-back title names a 7.3L gasoline, crew-cab short-bed, specified-wheelbase and single-rear-wheel application. Match every configuration detail before comparing exhaust choices. aFe radiator and Sinister coolant-feed references name distinct 6.7L Powerstroke applications, while a BD Diesel manifold names an older 7.3L Powerstroke. Gasoline and diesel references require separate engine, production and installed-connection checks.Suspension, Steering and Brake-System ChoicesBilstein reservoir-shock, Zone diesel front-coil, Tuff Country spring or bracket and Synergy steering...
View Ford F-250 Parts and Accessories Products
Shop Ford Mustang parts for exhaust projects, body changes, brake service and chassis work at Black Ops Auto Works. Compare CORSA exhaust references, Anderson Composites panels, Baer or DBA brake options and suspension components. Build your order around the exact Mustang generation, engine, body, transmission and installed equipment.CORSA Exhaust and Engine-Specific ProjectsCORSA references include 2020–2022 Shelby GT500 active cat-back systems with different tip configurations. Match factory valve equipment, body and complete system coverage before comparing finishes. BBK headers, intake and MAF references span other engines and production ranges. Ford modular intake, Boundary oil-pump and Mishimoto EcoBoost intercooler references require their own exact engine and installation checks.Carbon Fiber, Fiberglass and Exterior DetailsAnderson Composites fenders, hoods and bumper inserts distinguish production ranges, materials and body applications. APR plate backing, S550 quarter louv...
View Ford Mustang Parts & Accessories Products
Shop King Engine Bearings at Black Ops Auto Works for engine rebuilding and performance projects. Explore connecting-rod, crankshaft-main and cam-bearing sets alongside thrust washers. Choose the engine application, bearing construction and measured size that suit the completed machining and assembly plan.Connecting-Rod and Main Bearing SetsThe collection includes engine-specific references for BMW, Honda, Toyota, Nissan, Subaru, Ford, GM and other applications. Examples range from B58 and 2JZ sets to LS-family and VR38DETT choices. Rod and main bearings serve different locations; compare the exact engine code, series, set contents and part number for each stage of the build.Performance Coatings and Bearing SeriesNamed choices include coated performance sets, pMaxKote references, silicon-aluminum bi-metal and sputter replacement bearings. Compare the construction specified for the individual part with the engine builder’s requirements. A coating or performance-series name alone does...
View King Engine Bearings Products
Explore Lincoln Aviator parts for exhaust sound, intake projects, brake maintenance and interior protection at Black Ops Auto Works. Compare AWE Touring and Gibson exhaust applications, K&N intake choices, JXB transmission mounts and Husky Liners cabin or cargo coverage. Build an order around your Aviator generation, engine and project goals.AWE and Gibson Exhaust ChoicesAWE Touring Edition and Gibson axle-back titles name Explorer ST/Lincoln Aviator applications, with separate tip and system configurations to review. Match complete Aviator engine, body and production coverage, then compare supplied sections, connections and finish. Explorer-only exhaust references need independent Aviator coverage for the exact part number.K&N Intakes and JXB MountsThe K&N performance-intake title names Aviator 3.0L V6 coverage within its stated years. JXB lists a billet transmission-mount application naming Aviator alongside Explorer. Review each component’s complete production and equ...
View Lincoln Aviator Parts and Accessories Products
Explore Lincoln Continental parts for brake maintenance, restoration work and defined engine or axle projects at Black Ops Auto Works. Review Continental-specific DFC and EBC brake references alongside applicable engine and differential components. Choose parts for your actual generation, installed assemblies and the work you have planned.Brake Service Across Continental GenerationsA DFC master-cylinder title names 1965–1966 Continental, while an EBC front-pad title identifies a later Continental application. These references address different vehicles and service tasks. Match complete production and equipment coverage to the actual brake assembly before comparing any pad, hydraulic or hardware choice.Engine Components for Restoration and Build WorkEdelbrock, COMP Cams, Clevite, King and other engine references cover separate Ford engine families and dimensions. Select an intake, ignition component, bearing or gasket for the actual engine configuration and build specifications. Revi...
View Lincoln Continental Parts and Accessories Products
Explore Lincoln Mark VIII parts for ignition maintenance and planned drivetrain or engine work at Black Ops Auto Works. Review Granatelli wire applications naming Mark VIII, then compare FTI transmission, Yukon axle and engine-component references for your actual assemblies. Build the order around the project and current equipment in your car.Granatelli Ignition ApplicationsGranatelli wire titles name 1993–1997 Mark VIII 4.6L applications. Match complete production coverage and the actual ignition arrangement before comparing references. Other coil-on-plug titles identify different Ford configurations and require their own explicit Mark VIII application.FTI Transmission and Yukon Axle ProjectsFTI converter titles distinguish transmission families, bolt circles, dimensions and stated stall configurations. Review the complete combination with your transmission specialist before selection. Yukon gear, carrier and overhaul references need independent housing, spline and gearing matches ...
View Lincoln Mark VIII Parts and Accessories Products
Explore Mercury Marauder parts for exhaust projects, transmission work and axle or engine service at Black Ops Auto Works. Review the Stainless Works header reference naming Marauder, then compare proposed converter and build components around your exact generation and installed powertrain.Stainless Works Header ApplicationThe displayed Stainless Works title explicitly names 2003–2004 Marauder headers with 1-5/8in primaries, 2-1/2in wording and high-flow catalysts. Review complete engine/body application, connections, supplied components and installation requirements for that exact reference. The title does not establish measured vehicle gains or a complete exhaust-system replacement.FTI Transmission and Eaton/Yukon Axle ProjectsDisplayed FTI references identify distinct AODE/4R70/4R75 converter arrangements, bolt circles and stall-rating wording. Match the actual transmission, engine/flexplate and full build requirements independently. Eaton/Yukon choices cover different housing si...
View Mercury Marauder Parts and Accessories Products
Explore Mercury Mountaineer parts for an exhaust change, brake refresh or suspension project at Black Ops Auto Works. Start with the Gibson and MagnaFlow exhaust applications that name Mountaineer, then review the brake and chassis components needed for your SUV. Choose by exact generation, engine and drivetrain so the order suits the work you have planned.Gibson and MagnaFlow Exhaust ApplicationsThe Gibson 619687 title names 1997–2001 Explorer/Mountaineer 4.0L V6 applications with a 2.5-inch stainless single cat-back layout. The MagnaFlow BRE title names a separate 2006–2010 Explorer/Mountaineer/Sport Trac 4.0L range. Review complete year, drivetrain and exhaust-layout coverage before comparing either with your current system.Brake Service and Truck & Tow Kit ChoicesReview the PowerStop rear Z36 Truck & Tow kit with powder-coated calipers against the exact installed brakes and full Mountaineer coverage. Compare supplied calipers, pads, rotors and hardware with the axle serv...
View Mercury Mountaineer Parts and Accessories Products