Availability
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 )
$355.77
—
$379.99
Fleece Performance water neck block-off plates are thicker than the stock plate and feature an integrated square cut O-ring with no gasket required. In contrast, the OE covers are prone to leakage over time. Fleece block-off plates are an upgrade for the rear engine cover on your Duramax V8 and will stop the coolant leaks for good!
( 2 )
$55.00
Fleece Performance thermostat housings have an auxiliary port with plug to allow you to customize your coolant routings. Two elbow options are available as direct replacements for specific model years of RAM trucks with 5.9L or 6.7L Cummins, and in specific Fleece coolant bypass kits.
Not Yet Reviewed
$89.99
—
$129.99
Fleece Performance transmission cooler and line kits are drop-in replacements that deliver a massive 2 times increase in heat rejection and efficiency vs. stock! Control your transmission temperatures and tow with confidence with the latest improvement for your truck from Fleece Performance. Engineered from the ground up, these kits provide you with the most efficient and highest performing transmission cooler on the market, plus heavy-duty transmission lines and AN fittings for a leak-free installation. Fleece transmission cooler and line kits are the most complete options available to keep your rig running cool! Select the kit designed for your truck. Additional features: * Drop-in replacement for the factory transmission cooler * No cutting or splicing of OE lines * 20 percent increase in face area of the transmission cooler vs. stock * 100 percent pressure and leak tested
Not Yet Reviewed
$859.00
—
$899.00
Fleece Performance coolant tanks replace factory coolant tanks and move the location closer to the battery box allowing for more engine compartment space. Featuring an all-aluminum construction with a durable black powdercoat finish, the tanks are equipped with an integrated coolant level sensor that connects to the factory harness. Each kit includes: * Coolant tank * 3/4 in. coolant hose * 3/8 in. coolant hose * Overflow vent hose * -12AN to 7/8 in.-14 straight male with O-ring * -10AN to 7/8 in.-14 straight male with O-ring * Two -6AN to 7/8 in.-14 straight male with O-ring * -6AN 120-degree to hose barb fitting * Two -6AN 90-degreee to hose barb fitting * -10AN 90-degree to hose barb fitting * -12AN 90-degree to hose barb fitting * M10 mounting bolts and nuts * M6 mounting bolt and nut * Coolant level sensor * Two 7/8 in.-14 hex socket plug * Hose clamps
Not Yet Reviewed
$479.00
Modal Header
Truck / SUV
Jeep®
Restoration
Stock Replacement
Late Model Muscle
Tools
Gifts, Clothing, & More
Circle Track
Street Rod
Powersports
Paint & Body
Marine
Jr Dragster
