Cadillac Catera Saab 9-5 Heater Control Bypass Valve - 1AHCX00291

The heater control bypass valve controls the flow of coolant through the heater core, which controls passenger compartment temperature. Over time this valve can leak or fail. This replacement heater control valve is among the highest quality replacements on the market!


  • Brand New Replacement
  • Replaces dealer part numbers: 90566947, 15-50574, 1550574
  • Direct replacement
  • Built to strict quality control standards

This heater control valve is a great replacement and has good cost savings over a dealer unit.

Left Hand Drive Note:

“All of our auto parts are intended for Left Hand Drive USDM vehicles and might not have been tested on Right Hand Drive platforms. If your vehicle is Right Hand Drive, please do your research prior to making a purchase to ensure the part is correct for your specific vehicle.”

Item Condition: New

WARNING: Cancer and Reproductive Harm -

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

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Is this part the same as a heater core?
Shaunna on Nov 14, 2016
BEST ANSWER: HI Shaunna, no it isn't the same part as a heater core. If you have any other questions let me know. Colleen

Vehicle Fit

Year Make Model Description
1997-2001Cadillac Catera Cadillac Catera Heater Control Bypass Valve
1999-2005Saab 9-5 Saab 9-5 Heater Control Bypass Valve

This part replaces:

  • OE # 1550574
Only 1 left in stock
Part #: 1AHCX00291

Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout