Click to zoom in
ACL 6B2639H-.025 is a .025 size suffix connecting rod bearing set for the listed Infiniti G37 engine applications. It is intended for measured engine assembly where journal diameter, housing bore, oil clearance, bearing position, and every MPN suffix are confirmed before installation.
Key Features
- Exact ACL manufacturer part number 6B2639H-.025 for confident product matching
- .025 size suffix configuration
- Purpose-built connecting rod bearing set for measured engine assembly
- New aftermarket engine component; final clearance is determined by measurement
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 2009-2020 | Infiniti | G37 | Verify engine and crankshaft configuration |
| 2014-2020 | Infiniti | Q50 | Verify engine and crankshaft configuration |
| 2009-2021 | Nissan | 370Z | Verify engine and crankshaft configuration |
Vehicle fitment is a starting point only. Engine swaps, machining, crankshaft changes, previous repairs, and production variations can change the required bearing or pump configuration.
Specifications
| Brand | ACL |
|---|---|
| Manufacturer Part Number | 6B2639H-.025 |
| Component | Connecting Rod Bearing Set |
| Size / Clearance | .025 size suffix |
| Condition | New |
What's Included
The exact ACL component set and package quantity identified by the product title and MPN. Order the number of packages stated in the title when a listing is sold by pair or partial set.
About ACL
ACL manufactures engine bearings and lubrication components for replacement, performance, and motorsport engine builds. Black Ops Auto Works organizes the catalog by exact MPN, engine application, component position, and size suffix so builders can compare the correct configuration.
Related Parts
- ACL BMW S85B50 STD Size Performance Rod Bearing Set
- ACL BMW S85B50 5.0L V10 Standard Size (w/.001in Oil Clearance) Performance Rod Bearing Set
- Shop the complete ACL engine bearing and oil-pump collection
Frequently Asked Questions
What is ACL part 6B2639H-.025?
It is the connecting rod bearing set described on this page in the exact .025 size suffix configuration.
Does vehicle fitment alone confirm the correct bearing?
No. Match the exact MPN, engine code, crankshaft version, journal dimensions, and every size or clearance suffix.
What does STD mean?
STD identifies a standard-size configuration. The crankshaft and housing must still be measured before assembly.
What does an HX or clearance suffix mean?
It identifies an MPN-specific clearance configuration. Never substitute it without measured assembly requirements.
Can bearings be installed without measuring oil clearance?
No. A qualified engine builder should measure every journal, housing bore, and assembled oil clearance with calibrated tools.
Are related bearings or thrust washers included?
Only the components and quantity stated for this exact MPN are included. Main, rod, cam, and thrust components may be sold separately.
Is this product new?
Yes. The condition is new unless the product page explicitly states otherwise.
What should I verify before checkout?
Confirm the MPN, engine application, journal size, required clearance, package quantity, coating or series suffix, and all machine-shop measurements.
Installation Instructions
- Confirm ACL part 6B2639H-.025, the engine code, crankshaft version, journal position, and required size before disassembly.
- Have a qualified engine machinist inspect the crankshaft and housing, then measure every journal and bore with calibrated tools.
- Clean all oil passages and bearing seats; never install over debris, burrs, damage, or an unverified machined surface.
- Check bearing orientation, oil-hole alignment, crush, side clearance, and assembled oil clearance using the engine-builder procedure.
- Use the specified lubricant, fastener procedure, and torque sequence, then verify free rotation and oil-system priming before startup.
- Monitor oil pressure and inspect for abnormal noise or contamination during initial operation and break-in.
ACL
ACL Race Series engine bearings for Honda, Toyota, Subaru, Mitsubishi, Nissan, Ford, Chevrolet, Dodge, BMW, and Porsche engine builds are stocked at Black Ops Auto Works. Shop main bearing sets, connecting rod bearing sets, camshaft bearings, and thrust washers for HEMI, LS, LT, K-Series, VQ, VR38DETT, Coyote, and import turbo platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 481 ACL SKUs across main bearings, rod bearings, camshaft bearings, and thrust washer categories. What This Brand Covers ACL manufactures performance engine bearings used in race engines across sport compact, drift, oval track, drag racing, and land speed record disciplines. The Race Series line uses a tri-metal construction with a copper-lead alloy overlay that provides load capacity, conformability, and wear resistance under the high RPM and cylinder pressure conditions of a performance engine. A...
View ACL Products
Bearings
Engine and drivetrain bearings for domestic, import, and diesel platforms are stocked at Black Ops Auto Works. Shop main bearings, rod bearings, cam bearings, thrust bearings, wheel bearings, pilot bearings, transmission bearing kits, and differential bearing sets for HEMI 5.7, 6.1, 6.4, and 6.2 supercharged engines, LS and LT platforms, Coyote V8s, Duramax, Cummins, and Power Stroke diesels, and popular import engines like the VQ35, VQ37, VR38DETT, K20, K24, and 2JZ. Every bearing is filterable by year, make, model, engine code, and bearing clearance so the correct part ships the first time. Black Ops Auto Works carries 1250 bearing SKUs across engine internals, transmission and transfer case hardware, differential components, and wheel end assemblies. What This Category Covers Bearings are the precision-fit wear surfaces that keep an engine, transmission, and axle assembly spinning true under load. A correctly sized bearing set with the right clearance is one of the most impor...
View Bearings Products
Engine
Engine parts and engine bay upgrades for Dodge, Jeep, RAM, Chrysler, Chevrolet, Ford, Toyota, Nissan, Subaru, and Honda vehicles are stocked at Black Ops Auto Works. Shop oil catch cans, supercharger pulleys, thermostats, radiators, cooling parts, throttle bodies, intake manifolds, headers, ignition coils, spark plugs, sensors, gaskets, fuel pumps, valve covers, engine covers, billet cap covers, and full engine bay dress-up parts for HEMI, Hellcat, Trackhawk, Redeye, Demon, Scat Pack, RAM TRX, LS, LT, Coyote, EcoBoost, K-Series, and 2JZ builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 14,298 engine SKUs across performance, cooling, oil control, ignition, and appearance categories. What This Category Covers The Engine collection combines OEM-replacement engine service parts with performance aftermarket upgrades for supercharged, turbocharged, and naturally aspirated builds...
View Engine Products
Engine Block
Engine block parts and internals for HEMI, Hellcat, Trackhawk, TRX, LS, LT, Coyote, EcoBoost, K-Series, VR38DETT, and Cummins diesel builds are stocked at Black Ops Auto Works. Shop main and rod bearings, engine gaskets and gasket kits, engine mounts, block off plates, block heaters, PCV valves, sleeves, engine covers, and complete engines. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 2,187 engine block SKUs across rotating assembly, sealing, mounting, and engine bay dress-up categories. What This Category Covers The Engine Block collection groups the internal and structural components that make up the bottom end and block assembly of a performance or OEM-replacement engine. Coverage spans bearings for rotating assembly refreshes, gaskets and gasket kits for sealing rebuilds, engine mounts for swap and performance builds, and engine bay dress-up pieces for HEMI, Hellcat, and ...
View Engine Block Products