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ACDelco 15258742 - Automatic Transmission Auxiliary Fluid Cooler

GM Original Equipment


ACDelco GM Original Equipment Automatic Transmission Oil Coolers are heat exchangers, and are GM-recommended replacements for your vehicle’s original components. These heat exchangers transfer heat to and from the vehicle transmission oil to the engine coolant or ambient air. This helps keep the transmission temperature within the designed operating range, which helps optimize transmission efficiency and longevity. These original equipment automatic transmission oil coolers have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.

Availability: Call to check stock.
Shipping: 1 to 3 Day Delivery to Most Locations Within The Continental United States!
Pricing: $294.63


Automatic Transmission Auxiliary Fluid Cooler

Warranty: Limited Lifetime (Parts Only). Please see for more details.

Features & Benefits:

  • Helps maintain proper transmission operating temperatures
  • GM-recommended replacement part for your GM vehicle's original factory component
  • Offering the quality, reliability, and durability of GM OE
  • Manufactured to GM OE specification for fit, form, and function


Q: Will this cooler fit with existing transmission lines?
A: Yes. It should adapt to fit into the fluid cycle with no complications.

Maintenance & Troubleshooting

Signs of Wear & Troubleshooting

  • Signs of wear for an auto transmission oil cooler include but are not limited to:
    • Transmission cooler leaks
    • Low transmission fluid level
    • Transmission gears slipping or not engaging
    • Wet signs under vehicle or at transmission line connections

Good Maintenance Practices

  • Keep transmission fluid clean and full.
  • Do not tow over vehicle towing capacity.
  • Be sure transmission cooler is properly mounted.
  • Regularly inspect automatic transmission oil coolers for signs of damage or failure, and replace them if they are found.

California Proposition 65

California Prop 65WARNING: Cancer & Reproductive Harm -


  • 15258742
  • 15258742
  • ACDelco
  • Call to check stock.
  • New


Shipping Information

  • Item Requires Shipping
  • 4.7 lbs.
  • W6.3800” x H6.3800” x L31.8800”
  • 1 to 3 Day Delivery to Most Locations Within The Continental United States!

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California Residents: Prop 65

WARNING: Cancer and Reproductive Harm -