Cooling & Transmission Hoses

Choose the Right Transmission Oil Cooler Hose

Use a dedicated transmission oil cooler hose for automatic transmission fluid or oil service rather than a coolant-only heater hose. Our transmission cooler hoses feature fiber-reinforced CPE construction, SAE J1532 compliance, a 250 PSI working-pressure rating, and a temperature range from -40°F to 257°F. Available hose IDs include 5/16, 3/8, 1/2, and 5/8 inch, with 5FT, 10FT, and 20FT lengths for replacement lines, auxiliary coolers, and custom transmission cooling layouts.

Match ATF Hose Size, Fittings, and Cooler Layout

Before ordering an ATF hose, confirm whether your vehicle specification refers to the outside diameter of a metal cooler line or the inside diameter of a flexible hose. Match the hose ID to the hose barb or adapter, verify the radiator and transmission port style, and allow enough length to avoid kinks, sharp edges, exhaust heat, and moving components. You can complete the installation with compatible barb fittings or pair the hose with a suitable transmission oil cooler.

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EVIL ENERGY PTFE Hose End Fitting for PTFE Hose Only (3/4/6/8/10/12AN) - Black - EVILENERGY[Straight,1PC]
EVIL ENERGY PTFE Hose End Fitting for PTFE Hose Only (3/4/6/8/10/12AN) - Black

Engineered for high-pressure, high-temperature fuel systems, the EVIL ENERGY PTFE Hose End Fitting delivers leak-proof performance for PTFE fuel lines in performance builds, LS swaps, boosted engines, and ethanol-based fuel setups. Made from 6061-T6 aluminum with a 360° swivel design, these AN fittings ensure a clean, secure, and easy-to-assemble connection—ideal for builders who demand durability and precision.

$8.99
$8.99
$0.00
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[Black,Without Bracket] black inline evil energy fuel filter with directional arrow and multiple AN fuel line fittingsevil energy fuel filter kit with stainless steel inline fuel filter, AN fittings, and mounting hardware
EVIL ENERGY Inline Fuel Filter with 6AN 8AN 10AN Adapter and Bracket Universal 10/30/40/100 Micron - Black

[Application] Universal fuel filter, includes an6, an8, an10 adapters for different size applications. With mounting bracket keeps the engine bar stylish and clean.

  • [Material] Aluminum alloy fuel filter can and stainless steel filter element.
  • [O-ring] The o-ring provides a tight seal for fittings and end caps.
  • [Function] Can be used for filtering gasoline, diesel, etc. Captures contaminant particles of 10 micron and above to protect the fuel system of the vehicle.
  • [Feature] Removable design, easy to clean or replace filter element at regular time.
  • [Installation Tips] We have debugged the installation direction of the fuel filters before delivery. Please check and ensure the closed end of the filter element docks with the spring. Let the liquid flow following the arrow from the spring end to the other end, and the fuel filter will serve longer.
$23.99
$23.99
$24.99
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  • Silver Black
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[20FT] EVIL ENERGY PTFE Fuel Line Kit, complete black hose & fittings set, 180-day return[16FT] EVIL ENERGY PTFE Fuel Line Kit, black braided hose, fittings, free shipping & return
EVIL ENERGY 4/6/8/10AN PTFE Fuel Line Kit | E85 Nylon Braided Hose | 16/20FT Black Black with Comprehensive Fittings

Three-Layer Construction: Our fuel lines are constructed with a triple-layer material for unparalleled performance and protection. The innermost layer is made of PTFE for maximum chemical resistance, a braided stainless steel layer for strength and durability, and an outer nylon layer for added abrasion resistance and protection.

Multiple Sizes: We offer our fuel lines in 4AN, 6AN, 8AN, and 10AN sizes, catering to the diverse needs of various fuel delivery systems.

Fitting Types: Our kit includes a variety of fittings at 0°, 90°, 45°, and 180° angles, ensuring versatility and flexibility during installation, allowing for custom routing in tight or complex spaces.

Precision Fit and Leak-Free Performance: The combination of the PTFE inner layer and the high-quality aluminum hose ends ensures a precision fit and leak-free connection, even under extreme pressure, providing a safe and reliable fuel system.

$73.09
$73.09
$70.99
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[1 PC][2 PCS]
EVIL ENERGY AN Flare to AN ORB Male Fuel Rail Adapter Fitting
  • AN to ORB Conversion
    Converts AN flare fittings to ORB ports for fuel rails and aftermarket fuel components.
  • High Pressure Capability
    Rated up to 1500 PSI for reliable performance in fuel and oil systems.
  • Leak Free Sealing Design
    37 degree AN flare seal combined with ORB O ring ensures a secure, leak resistant connection.
  • CNC Machined Aluminum
    Made from 6061 T6 aluminum with black anodized finish for corrosion resistance.
  • Wide Size Availability
    Multiple AN sizes available to support custom fuel system layouts.
$8.99
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  • [5FT][10FT]
    EVIL ENERGY Heater Hose Coolant Radiator Straight 100PSI SAE 20R3 (5/8,1/2,3/4,3/8,5/16,1 inch)

    The EVIL ENERGY Heater Hose is designed for high-temperature and high-pressure cooling system applications. Made from durable EPDM rubber and compliant with SAE 20R3 Class D-2, it delivers long-lasting flexibility and resistance to heat, ozone, and coolant chemicals.

    Rated for up to 100 PSI and -40°F to 257°F, this hose ensures stable flow and reliable performance in radiators, heater cores, and overflow tanks. Available in multiple ID sizes (5/16 inch to 1 inch) and lengths up to 25FT for universal installation across classic, performance, and heavy-duty engines.

    Ideal for those upgrading or restoring engine cooling systems, 454 big block builds, or custom EFI setups that demand consistent coolant circulation and long-term durability.

    $17.39
    $17.39
    $46.50
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  • [5FT,Without clamps][10FT,Without clamps]
    EVIL ENERGY Transmission Oil Cooler Hose 250PSI SAE J1532 5/10/20FT

    Built for performance and durability, the EVIL ENERGY Transmission Oil Cooler Hose ensures a secure, heat-resistant connection for your automatic transmission or engine oil system. Made from premium CPE material reinforced with fiber, it withstands up to 250 PSI working pressure and extreme temperatures up to 257°F. Perfect for transmission cooler lines, hydraulic systems, and custom fuel setups that demand reliability under pressure.

    $17.99
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  • [5FT] EVIL ENERGY heater hose with clamps, 5FT coolant radiator hose. Image showing kit components: 5-foot EPDM hose and 5 clamps.[10FT] EVIL ENERGY heater hose with clamps, 10FT coolant radiator hose. Image showing kit components: 10FT EPDM hose and 10 clamps.
    EVIL ENERGY 3/8inch Heater Hose 5FT/10FT Coolant Radiator Hose With 5PCS Clamps Straight 100PSI SAE 20R3 Black
    This EVIL ENERGY Heater Hose With Clamps kit includes one 5-foot EPDM rubber hose and 5PCS Clamps. Designed for high-temperature fluid transfer, it is ideal for automotive heater systems, engine cooling systems, radiator return lines, and other similar applications. Perfect for routine maintenance or custom...
    $17.99
    $17.99
    $17.99
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  • EVILENERGY EVIL ENERGY 6AN Rubber Transmission Cooler Line Kit 15FT for 4L60E 4L65E | NBR Inner Tube with Polyester Braid and CPE Cover, 3-Layer Reinforced Design for Oil Resistance, Flexibility & DurabilityEVILENERGY EVIL ENERGY 6AN Rubber Transmission Cooler Line Kit 15FT for 4L60E 4L65E | NBR Inner Tube with Polyester Braid and CPE Cover, 3-Layer Reinforced Design for Oil Resistance, Flexibility & Durability
    EVIL ENERGY 6AN Rubber Transmission Cooler Line Kit 15FT for 4L60E 4L65E | NBR Inner Tube with Polyester Braid and CPE Cover, 3-Layer Reinforced Design for Oil Resistance, Flexibility & Durability
    • Transmission Fitment: This transmission line is compatible with GM 4L60E and 4L65E transmissions, providing a reliable connection between the transmission and cooler for efficient fluid transfer. Please verify your transmission model before purchase
    • Hose Specifications: 6AN × 15FT, ID: 0.38" (9.7mm), OD: 0.65" (16.5mm), Max Working Pressure: 650 PSI, Burst Pressure: 1180 PSI, Temperature Range: -4°F to 212°F, Minimum Bend Radius: 2.6" (66mm)
    • 3-Layer Construction: Built with an NBR inner tube, braided polyester middle layer, and CPE rubber outer cover, this transmission cooler line delivers flexibility, durability, and resistance against oil, fluid, and abrasion
    • High Pressure Rating: The 6AN transmission line is rated for 650 PSI working pressure and 1180 PSI burst pressure, with reliable performance from -4°F to 212°F for dependable transmission cooling applications
    • Wide Fluid Compatibility: This transmission line supports transmission fluid, engine oil, gasoline, and diesel for versatile fluid transfer applications across multiple systems
    • Complete Kit Included: This transmission line kit includes a 15FT hose, swivel hose ends, and adapter fittings for convenient installation. Precision-machined components ensure secure connections and reliable performance
    $42.99
    $42.99
    $42.99
    Out Of Stock
    Out Of Stock
  • EVILENERGY EVIL ENERGY 6AN CPE Transmission Cooler Line Kit 15FT for 4L80E Fuel Line | CPE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, Design for High Pressure, Heat Resistance & DurabilityEVILENERGY EVIL ENERGY 6AN CPE Transmission Cooler Line Kit 15FT for 4L80E Fuel Line | CPE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, Design for High Pressure, Heat Resistance & Durability
    EVIL ENERGY 6AN CPE Transmission Cooler Line Kit 15FT for 4L80E Fuel Line | CPE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, Design for High Pressure, Heat Resistance & Durability
    • Transmission Fitment: This transmission line is compatible with 4L80E transmissions, providing a reliable connection between the transmission and cooler for efficient fluid transfer. Please verify your transmission model before purchase
    • Hose Specifications: 6AN × 15FT, ID: 0.31" (8mm), OD: 0.56" (14.3mm), Max Working Pressure: 750 PSI, Burst Pressure: 2250 PSI, Temperature Range: -22°F to 248°F, Minimum Bend Radius: 2.5" (63.5mm)
    • 3-Layer Construction: Built with a durable CPE inner tube, 304 stainless steel braid, and a braided nylon outer cover, the transmission cooler line is engineered for lasting durability. The reinforced construction provides excellent flexibility while helping resist abrasion and high-pressure operation
    • High Pressure Rating: The 6AN transmission line is rated for 750 PSI working pressure and 2250 PSI burst pressure to handle demanding applications. It performs reliably from -22°F to 248°F for dependable transmission cooling
    • Wide Fluid Compatibility: This transmission line is compatible with transmission fluid, engine oil, racing fuel, diesel, hydraulic oil, and power steering fluid for versatile fluid transfer applications. Not compatible with E85.
    • Complete Kit Included: The 4L80E transmission line kit includes a 15FT hose, swivel hose ends, and adapter fittings for a complete cooling system connection. Precision-machined components ensure secure fittings and reliable installation
    $45.99
    $45.99
    $45.99
    Out Of Stock
    Out Of Stock
  • EVILENERGY EVIL ENERGY AN10 PTFE Transmission Line for GM Duramax 01-05 6.6L LB7 / LLY | PTFE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, Design for Extreme Heat, Chemical Resistance & DurabilityEVILENERGY EVIL ENERGY AN10 PTFE Transmission Line for GM Duramax 01-05 6.6L LB7 / LLY | PTFE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, Design for Extreme Heat, Chemical Resistance & Durability
    EVIL ENERGY AN10 PTFE Transmission Line for GM Duramax 01-05 6.6L LB7 / LLY | PTFE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, Design for Extreme Heat, Chemical Resistance & Durability
    • Transmission Fitment: This transmission line is compatible with 2001-2005 GM Duramax 6.6L LB7/LLY transmissions, providing reliable fluid transfer between the transmission and cooler for efficient cooling performance. Please verify your transmission model before purchase
    • Hose Specifications: 10AN, ID: 0.52" (13.3mm), OD: 0.69" (17.5mm), Max Working Pressure: 1250 PSI, Burst Pressure: 3750 PSI, Temperature Range: -76°F to 446°F, Minimum Bend Radius: 4.5" (114.3mm).
    • 3-Layer Construction: Built with a PTFE inner tube, 304 stainless steel braid, and braided nylon outer cover, this transmission cooler line delivers excellent chemical resistance, heat resistance, flexibility, and long-lasting durability
    • High Pressure Rating: The AN10 transmission line is rated for 1250 PSI working pressure and 3750 PSI burst pressure, with reliable performance from -76°F to 446°F for demanding transmission cooling applications
    • Wide Fluid Compatibility: This transmission line supports transmission fluid, engine oil, E85, racing fuel, diesel, and hydraulic steering fluids for versatile fluid transfer applications
    • Complete Kit Included: The transmission line kit includes hose, swivel hose ends, and adapter fittings for a secure cooling system connection. Precision-machined components ensure reliable installation and performance
    $75.99
    $75.99
    $75.99
  • EVILENERGY EVIL ENERGY 6AN PTFE Transmission Line Kit 7FT for 4L60 700R4 TH350 TH400 | PTFE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, 3Design for High Heat, Chemical Resistance & DurabilityEVILENERGY EVIL ENERGY 6AN PTFE Transmission Line Kit 7FT for 4L60 700R4 TH350 TH400 | PTFE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, 3Design for High Heat, Chemical Resistance & Durability
    EVIL ENERGY 6AN PTFE Transmission Line Kit 7FT for 4L60 700R4 TH350 TH400 | PTFE Inner Tube with 304 Stainless Steel Braid and Nylon Cover, 3Design for High Heat, Chemical Resistance & Durability
    • Transmission Fitment: This transmission line is compatible with 4L60, 700R4, TH350, and TH400 transmissions, providing reliable fluid transfer between the transmission and cooler for efficient cooling performance. Please verify your transmission model before purchase
    • Hose Specifications: 6AN × 7FT, ID: 0.31" (8mm), OD: 0.45" (11.5mm), Max Working Pressure: 1500 PSI, Burst Pressure: 4500 PSI, Temperature Range: -76°F to 446°F, Minimum Bend Radius: 3.5" (88.9mm).
    • 3-Layer Construction: Built with a PTFE inner tube, 304 stainless steel braid, and braided nylon outer cover, this transmission cooler line provides excellent chemical resistance, heat resistance, flexibility, and durability for demanding applications
    • High Pressure Rating: The 6AN transmission line is rated for 1500 PSI working pressure, and 4500 PSI burst pressure, with reliable performance from -76°F to 446°F for high-performance transmission cooling systems
    • Wide Fluid Compatibility: This transmission line supports transmission fluid, engine oil, E85, racing fuel, diesel, and hydraulic steering fluids for versatile fluid transfer applications
    • Complete Kit Included: The transmission line kit includes a 7FT hose, swivel hose ends, and adapter fittings for convenient installation. Precision-machined components ensure secure connections and reliable performance
    $38.99
    $38.99
    $38.99
    Out Of Stock
    Out Of Stock

FAQs about Cooling & Transmission Hoses

Can I replace a transmission oil cooler hose myself?

You may be able to replace a flexible transmission oil cooler hose yourself if the connection points are accessible and the system uses straightforward hose-barb fittings and clamps. The job generally requires identifying the correct supply or return line, safely collecting any lost transmission fluid, cutting and routing the new hose, securing every connection, refilling with the specified fluid, and checking for leaks.

Replacement becomes more difficult when the vehicle uses preformed metal lines, corroded fittings, factory quick-connects, limited access, or model-specific adapters. In those cases, professional installation is recommended. Never run the engine with an unsecured line, and verify the transmission-fluid level according to the vehicle manufacturer’s procedure after installation.

A 5/16 transmission cooler line usually refers to a rigid metal tube measured by its outside diameter, while a flexible transmission cooler hose is normally sold according to its inside diameter. Because the two measurements describe different parts of the connection, a 5/16 metal line does not automatically require a 5/16 ID hose.

Some systems use a compression adapter that converts a 5/16 hard line to a larger hose barb, such as 3/8 inch. Measure the existing line, hose barb, or adapter and confirm the required connection type before ordering. Do not reduce or increase the original flow diameter without checking the vehicle or cooler manufacturer’s requirements.

Choose an ATF hose by checking five factors: fluid compatibility, hose inside diameter, fitting type, pressure and temperature ratings, and required length. Start with the vehicle service information or the dimensions of the original transmission cooler line rather than choosing by vehicle model alone.

For transmission-fluid service, use a hose specifically rated for oil and transmission fluid. The EVIL ENERGY transmission hose is listed as compatible with transmission fluid and uses fiber-reinforced CPE construction with SAE J1532 compliance, a 250 PSI working-pressure rating, and a -40°F to 257°F operating range. Also confirm that the selected length allows smooth routing without stretching or tight bends.

Inspect transmission cooler hoses regularly for wet connections, ATF residue, cracking, hardening, swelling, abrasion, flattened sections, loose clamps, and contact with exhaust components or sharp edges. Replace the hose if its outer cover is damaged or if it has become stiff, soft, swollen, or visibly restricted.

After installing a new hose, run the vehicle according to the correct fluid-level checking procedure and inspect every connection for leaks. Recheck the clamps after the first several heat cycles and periodically afterward. Avoid overtightening clamps, because excessive force can cut or deform the hose and eventually cause leakage.

Compatible fittings depend on the hose inside diameter and the connection used by the transmission, radiator, or auxiliary cooler. Identify whether the vehicle uses a hose barb, inverted flare, SAE flare, NPT thread, compression fitting, or factory quick-connect before selecting an adapter.

The hose barb outside diameter should match the hose inside diameter unless the fitting manufacturer specifies a different pairing. Thread diameter alone is not enough; thread pitch, sealing method, flare angle, and male or female orientation must also match. When replacing a factory connection, compare the original fitting and line measurements or consult the vehicle’s service information before purchasing adapters.

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