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Upgrade your Cummins valve springs and retainers with Fleece Performance spring and retainer kits. They are manufactured from "super clean" high-tensile chrome silicon steel with a proprietary multi-step heat treating process that minimizes load loss. The springs have a seat pressure of 105 lbs. with an open pressure of 195 lbs. at maximum lift. The retainers are through hardened 4140 chromoly steel and have a black oxide finish. Please note: Retainer locks are not included.
Not Yet Reviewed
$499.99
$424.99
On Sale
Fleece Performance valve cover conversion harnesses are available to convert your 6-pin injector connector to a 4-pin or vice versa. These harnesses are designed for early or late rocker box styles, plug into the factory harness, are designed to run on backside of engine, and the factory connector goes under the intake shelf. They produced in-house at Fleece with their manufacturing process including fully automated wire cutting and terminal crimping to ensure you get the highest quality replacement parts needed. Select the harness designed for your truck's rocker box style.
Not Yet Reviewed
$139.99
$118.99
On Sale
Broken connectors, intermittent connections, or frayed wiring can cause your diesel to have poor reliability. Fleece Performance Engineering pigtails are produced in-house and offer an OEM+ quality repair for common failure points. Fleece Performance valve cover injector pigtails include heat-sealable butt-style connectors and a 6 in. pigtail. These replacements are manufactured with fully automated wire cutting and terminal crimping, ensuring the highest quality to get your truck or car back on the road quickly.
Not Yet Reviewed
$29.99
$25.49
On Sale
Fleece Performance offers wiring pigtails and replacement connectors for a wide range of vehicles—including many Dodge, Chevrolet, GMC, Ford, and Ram models from the 1990s and up. These replacement parts are ideal for sensors, starter solenoids, cooling fans, and other components under the hood. Fully automated in-house wire cutting and terminal crimping ensure you get the highest quality connectors and pigtails to get your car or truck back on the road quickly. Order the model that corresponds to your electrical application.
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$14.99
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$59.99
$12.74
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$50.99
On Sale
Upgrade your leaking or corroded heater tubes with stainless steel tubes and a high-temperature silicone hose kit from Fleece Performance. This heater core kit contains everything needed to replace your heater lines from the block to the firewall. It's designed as a direct replacement for all 12-valve Cummins trucks originally equipped with air conditioning. Kit includes: * Stainless steel heater tube - replaces Cummins 3912086 * Stainless steel heater tube - replaces Cummins 3912087 * Silicone heater hose (straight tube to block) - replaces Cummins 3931522 * Silicone heater hose (90 degree tube to block) - replaces Cummins 3957649 * Silicone heater hoses (45 degree tubes to firewall) * Anodized billet aluminum hold-down clamps, billet aluminum standoff, and mounting hardware for both stock and aftermarket manifolds * Hose clamps Application notes: * This kit (S0486) is intended for use with trucks originally equipped with air conditioning. If your truck is not equipped with A/C, you'll need to supply your own 5/8 in. I.D. hose to run from the firewall ports to the stainless steel heater lines. * The silicone heater hose (tube to firewall) may require trimming for certain applications or to accommodate modifications made previously to the engine. * If your truck is equipped with an aftermarket exhaust manifold, the rear heater line standoff will not be utilized and an additional mounting bracket is provided in the kit.
Not Yet Reviewed
$379.00
$322.15
On Sale
If you are running an aftermarket pump that is mounted external of the fuel tank, you will need to install a draw straw or drill your fuel tank to accommodate a sump. Each of these has some significant drawbacks including the 1/4 tank issues that result in cavitation of the pump when you draw air into the fuel system. To resolve this issue there are Fleece Performance SureFlo performance sending units. SureFlo units are designed to work with aftermarket lift pumps and fit directly into your stock sending unit location. Each one features factory-style quick disconnects to adapt your stock fuel lines at the tank, giving you the cleanest installation available, and requiring no cutting or drilling of the tank. SureFlo works by drawing fuel from, and returning fuel to, the bucket assembly at the base of the unit, ensuring you are always drawing fuel into your pump and not drawing air into the fuel system, as well as eliminating the dreaded 1/4 tank problems. The SureFlo bucket also incorporates one-way check valves to allow fuel to easily flow in at lower levels. Fleece Performance SureFlo performance sending units are a great alternative for trucks originally equipped without an in-tank pump needing to repair a malfunctioning level sender or if you are simply looking to run your own custom fuel lines directly to the tank. Choose the SureFlo unit designed for your Cummins or Duramax fuel system. Features: * New fuel level electronics and fuel float * Heavy-duty billet aluminum cap * Universal -8 AN ports for professionally plumbing a custom fuel setup * New O-ring or flange seal * Adaptation pigtail connector (where applicable)
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$359.00
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$379.00
$305.15
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$322.15
On Sale
Fleece Performance billet rocker arm bridges offer a massive 2.5 times strength improvement over factory bridges for your diesel. They are machined from billet 8620 steel, surface ground for flatness, case hardened, and carburized. The rocker arm bridges also provide improved oiling to the valve stems, and they are branded with the Fleece Performance "F".
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$467.43
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$512.54
$397.32
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$435.66
On Sale
Fleece Performance regulated return systems take their standard fuel distribution blocks to the next level by fully integrating a high-flow pressure regulator. This feature, in combination with high-flow aftermarket electric fuel pumps (without built-in pressure regulation), provides more consistent fuel pressure at the CP3. The kits also have one additional return line port and one additional feed line port. The extra return line port allows you to remove the factory fuel pressure relief valve hard line and fuel injector return galley hard line to provide clearance for high-flow side draft intakes, common on competition engines. If you're looking for something beyond your average fuel distribution block, Fleece Performance regulated return systems are your answer.
Not Yet Reviewed
$618.10
$525.38
On Sale
Fleece Performance Stage 2 pushrods are stock-length units with robust forged cup ends to upgrade your diesel engine. They are produced from 4130 chrome molybdenum steel and heat treated to Rockwell Rc60 for outstanding strength and rigidity. Fleece Stage 2 pushrods are designed to stand up to higher valve spring pressure, rpms, and cylinder pressure while minimizing valvetrain deflection. Choose the set designed for your diesel.
Not Yet Reviewed
$400.14
$340.12
On Sale
Fleece Performance offers dual pump hardware kits for a variety of diesel trucks. Kits include all the components you need to begin the build of a custom Dual CP3 Fuel System on your 5.9L or 6.7L Cummins engine application. A Dual CP3 system adds an additional CP3 in conjunction with your factory pump so you can make the most of your aftermarket tuning, injectors, and other upgrades. Combine one of these Fleece hardware kits with a CP3 pump, spoked or solid pulley, Fleece fuel distribution block, and a hose and fitting kit to complete your fuel system (other components sold separately). Kit contents: * Cummins common rail Dual CP3 bracket * Cummins heavy-duty dual pump belt * Fan shroud bracket * Dual pump pulley – idler * Cummins dual pump idler pulley spacer * Cummins dual pump controller * High-pressure dual pump line (CP3 to CP3) * High-pressure CP3 fitting and non-return valve * (6) M8 x 1.25 flange nuts * (6) M8 x 1.25 × 50 carriage bolts * M10 x 1.5 x 40mm flange head cap screw * M8 × 1.25 flange head cap screw * M18 x 1.5 CP3 nut Features: * Easy install kit * Exclusive pump to pump line * Increased engine performance
( 1 )
$780.00
$663.00
On Sale
Fleece Performance coolant bypass kits meet the demands for more cooling that comes with increased horsepower. Your engine cooling system was designed to handle a 300-350hp engine. When you increase the power, you increase the demand on your cooling system and the possibility of problems that may lead to failure. Fleece coolant bypass kits feature a secondary thermostat that operates on temperature--not excessive pressure--solving excessive pressure problems before they become an issue by ensuring consistent temperatures across all six cylinders. Each kit includes high-quality AN O-ring fittings and AN hose connections with braided hose to ensure a leak-free installation. When there's a need for better performance, you can rely on coolant bypass kits from Fleece to supply the necessary components for assured greater performance.
( 6 )
$359.00
$305.15
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