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Increased Coolant Flow, Decreased Coolant Temperatures The rear cylinders on the 5.9/6.7L Cummins suffer from a lack of coolant flow, and therefore, experience the highest coolant temperatures. This can cause excessive pressure to build in the cooling system, especially the rear of the block and blow out freeze plugs externally, or the smaller diameter plugs under the valve cover, leading to a failure.
Key Features
- Purpose-built coolant bypass kits
- Exact configuration is identified by the manufacturer part number
- Compatibility depends on the documented vehicle or component application
- Included components are limited to the exact listing configuration
Fitment
| Years | Make | Model | Application |
|---|---|---|---|
| 1994-1998 | Dodge | Ram 2500 | 5.9L Cummins |
| 1994-1998 | Dodge | Ram 3500 | 5.9L Cummins |
Specifications
| Brand | Fleece Performance |
|---|---|
| Manufacturer Part Number | FPE-CLNTBYPS-CUMMINS-12V |
| Product Type | Coolant Bypass Kits |
| Condition | New |
| Engine | 5.9L Cummins |
What's Included
One new Fleece Performance product identified by manufacturer part number FPE-CLNTBYPS-CUMMINS-12V. Additional fittings, fluids, hoses, wiring, tuning, tools, and hardware are included only when expressly stated for this exact part number.
About Fleece Performance
Fleece Performance Engineering develops diesel fuel-system, turbocharger, cooling, valvetrain, engine, and electrical components for Cummins, Duramax, Power Stroke, and related applications. Correct selection depends on the exact part number and complete application details.
Related Fleece Performance Products
- Shop all Fleece Performance products
- Fleece Performance 03-05 Auto Trans Cummins Coolant Bypass Kit w/ Stainless Steel Braided Line
- Fleece Performance 03-07 Dodge 5.9L / 04.5-12 6.7L Cummins Coolant Bypass Kit (03-07 Manual Trans)
- Fleece Performance 03-07 Dodge 5.9L Cummins Coolant Bypass Kit (03-05 Auto Trans)
Frequently Asked Questions
How do I confirm Fleece Performance FPE-CLNTBYPS-CUMMINS-12V fits?
Match every year, make, model, and application note in the fitment table. Confirm engine, drivetrain, body configuration, factory equipment, connectors, and any exclusions before ordering.
What is included with Fleece Performance FPE-CLNTBYPS-CUMMINS-12V?
The listing includes only the components stated in the What's Included section. Related fittings, wiring, fluids, tools, and supporting parts are not included unless expressly listed.
Does installation require tuning or additional parts?
Requirements vary by application. Confirm tuning, calibration, fluids, seals, fittings, wiring, specialty tools, and supporting modifications before installation.
Installation Instructions
- Verify the exact application and inspect every included component before installation.
- Follow the current Fleece Performance instructions for the exact part number, including all torque, sealing, wiring, fluid, clearance, priming, and calibration requirements.
- Check for leaks, fault codes, abnormal operation, and loose connections after startup and again after the initial drive.
Coolant Bypass Kits
Coolant Bypass Kits parts and accessories Coolant bypass kits, hoses, brackets and service parts for Dodge and RAM Cummins diesel trucks are stocked at Black Ops Auto Works. Shop 5.9L and 6.7L bypass kits, braided lines, service kits, thermostat housings, coolant fittings, replacement hoses and mounting hardware for 12 valve, VP44 and common rail Cummins applications. 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 24 Coolant Bypass Kits SKUs with application specific parts, hardware and supporting components. What This Coolant Bypass Kits Collection Covers The collection is centered on Cummins coolant bypass systems and related fittings. A bypass kit adds a controlled coolant path to support more consistent circulation in the rear of the engine, with parts selected for specific engine generations and transmission configurations. Application Specific Fitment Use the application i...
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Cooling
Cooling system parts and accessories for HEMI, Hellcat, Trackhawk, Duramax, Cummins, and import performance builds are stocked at Black Ops Auto Works. Shop radiators, thermostats, thermostat housings, water pumps, coolant reservoirs, expansion tanks, radiator hoses, oil coolers, transmission coolers, fans and shrouds, and thermal wrap for street, track, towing, and diesel 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 2116 Cooling SKUs across radiator, thermostat, water pump, hose, and heat management categories. What This Category Covers The Cooling category groups together every part that keeps engine, transmission, and charge air temperatures in check under real driving load. Coverage spans aluminum performance radiators, billet thermostat housings, high flow water pumps, silicone radiator hose kits, coolant reservoirs and expansion tanks, oil and transmission co...
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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...
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Fleece Performance
Shop Fleece Performance diesel turbochargers, lift pumps, injection pumps, fuel-filter systems, cooling upgrades, engine components, sensors, pigtails, and installation hardware at Black Ops Auto Works. This collection supports select Ram Cummins, Chevrolet and GMC Duramax, and Ford Power Stroke applications, along with universal diesel fuel and electrical service components. Fleece Performance parts are highly application-specific. Correct fitment can depend on the production date, engine code, chassis, cab and bed configuration, fuel-system design, turbocharger, factory wiring, and existing modifications. Use the complete Fleece manufacturer part number and current application notes before ordering. Fleece Performance Cheetah Turbochargers Fleece Performance offers Cheetah turbocharger upgrades for selected Cummins, Duramax, and Power Stroke engines. The broader turbo catalog also includes installation kits, actuators, sensors, exhaust-pressure components, fittings, coolant lines,...
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