Keep automatic transmission fluid temperatures in check with the Hayden Rapid-Cool Transmission Oil Cooler, MPN 677. This add-on aluminum cooler fits many vehicles, among them the 1994-2003 Dodge Ram 1500 3.7L / 3.9L / 4.7L / 5.2L / 5.7L / 5.9L, the 1988-1999 Chevrolet C1500 4.1L / 4.3L / 5.0L / 5.7L / 6.2L / 7.4L and the 1994-1997 Chevrolet K1500 4.3L / 5.0L / 5.7L; see the "Vehicles it fits" section for the full list. A transmission oil cooler transfers heat from the ATF to the surrounding air; if high fluid temperature is a factor in your transmission running hot, adding this cooler helps lower operating temperatures.
- Aluminum construction: Hayden rates the Rapid-Cool design as 33% more efficient than a comparable tube-and-fin cooler.
- Pressure tested: each unit is 100% pressure tested to 150 PSI for quality assurance.
- Hookups: male hose-barb connectors with a 3/8 connector fitting.
- Install-ready: integrated bracket with mounting hardware included; compatible with OEM cooler systems.
Finished in black. Country of origin: Korea, Republic of.
Interchange: CWK911677 · 17509 · 4200002 · 75043 · 243007 · 77421 · 911677 · 11153006 · 53006 · 13502 · 982806 · 400117 · 10111 · 0677 · 141016 · 143007 · 7134542 · LPD4452 · LPD4542 · 79828 · 750258
This part cross-references / interchanges with the following part numbers:
Frequently Asked Questions
What does this transmission oil cooler do?
It transfers heat from the automatic transmission fluid to the surrounding air to help lower ATF operating temperature. If high fluid temperature is a factor in your transmission running hot, adding this cooler helps.
What is the cooler made of?
It uses aluminum construction and is finished in black. Hayden rates the Rapid-Cool design as 33% more efficient than a comparable tube-and-fin cooler.
Does it include mounting hardware?
Yes. Mounting hardware is included, and the cooler has an integrated bracket for installation. It is also compatible with OEM cooler systems.
What are the connections on this cooler?
It uses male hose-barb connectors with a 3/8 connector fitting.
Will this cooler fit my vehicle?
It fits many vehicles, among them the 1994-2003 Dodge Ram 1500 3.7L / 3.9L / 4.7L / 5.2L / 5.7L / 5.9L and the 1988-1999 Chevrolet C1500 4.1L / 4.3L / 5.0L / 5.7L / 6.2L / 7.4L. See the "Vehicles it fits" section for the full list.
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