Protect your automatic transmission from heat with the Hayden Rapid-Cool Transmission Oil Cooler with Thermal Bypass (MPN 698). This add-on cooler routes automatic transmission fluid through an aluminum core to shed heat before the fluid returns to the transmission, and it fits a huge range of applications — including the 1988-1999 Chevrolet C1500 (V8-5.0L, V8-5.7L), 1994-1997 Chevrolet K1500 (V6-4.3L, V8-5.0L, V8-5.7L), 1994-2003 Dodge Ram 1500 (V8-5.9L) and many Buick Century and LeSabre models. See the Buyer's Guide tab for the full list of 1044 applications.
The integrated thermal bypass regulates fluid flow with temperature, helping the fluid reach operating temperature and then routing it through the core once it warms up.
Finished in black. Country of origin: Republic of Korea. This is a supplemental cooler, not an O.E. replacement unit.
Interchange: 15474 · 243015 · 911698 · 918262 · 53052 · LPD4543
This part cross-references / interchanges with the following part numbers:
What does this transmission oil cooler do?
It routes automatic transmission fluid through an aluminum core to remove heat, helping keep fluid temperature in a safe operating range before the fluid returns to the transmission.
What is the thermal bypass for?
The integrated thermal bypass regulates fluid flow based on temperature, allowing the fluid to warm up and then routing it through the cooler core once it reaches operating temperature.
What is the core made of?
The core is aluminum, and Hayden rates it as 33% more efficient than a comparable tube-and-fin design. Every unit is 100% pressure tested to 150 PSI.
Does it include mounting hardware and fittings?
Yes. It has an integrated bracket, mounting hardware is included, and it uses 3/8 hose-barb connections compatible with OEM cooler systems.
Is this an OE replacement part?
No. Per the catalog it is not an O.E. replacement; it is a supplemental Rapid-Cool cooler. Check the Buyer's Guide tab to confirm it fits your specific vehicle and engine.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
