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HVAC Heater Control Valve
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HVAC Heater Control Valve (Four Seasons) for 1985-1991 GMC & Oldsmobile • Cutlass Supreme, Safari NEW

$ 21 .12
120-DayReturns
LifetimeWarranty
100%Money-Back

Product Notes Read before buying

Heater Fitting
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Four Seasons.
Brand: Four Seasons
Condition: New
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Specifications & Info


Attribute Value
Center B Width IN 1.000
Center B Width MM 25.4
Center Width IN 1.250
Center Width MM 31.75
Description Heater Fittings
Fitting Size End 1 0.625
Fitting Size End 2 0.75
Inlet Dia. Fraction 1
Inlet Dia. IN 1.000
Inlet Dia. MM 25.4
Inlet Length IN 0.81
Inlet Length MM 20.64
Material Steel
Outlet C Length IN 0.750
Outlet C Length MM 19.05
Outlet D Length IN 1.000
Outlet D Length MM 25.4
Outlet Length IN 0.81
Outlet Length MM 20.64
Overall Depth IN 1.750
Overall Depth MM 44.45
Part Note 5/8" Hose To 3/4" Npt; W/restrictor
Type Heater Fitting

Vehicle Fitment Guide

This part fits the following vehicles:

GMC 1 model (tapclick to expand)(tapclick to hide)
Safari 1985-1989 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Standard Cargo Van 1985 - 1989 L4 2.5L RWD Automatic & Manual
Base Standard Cargo Van 1985 - 1989 V6 4.3L RWD Automatic & Manual
SL Standard Passenger Van 1985 L4 2.5L RWD Automatic & Manual
SL Standard Passenger Van 1985 - 1987 V6 4.3L RWD Automatic & Manual
SLE Standard Passenger Van 1985 L4 2.5L RWD Automatic & Manual
SLE Standard Passenger Van 1985 - 1989 V6 4.3L RWD Automatic & Manual
SLT Standard Passenger Van 1987 - 1989 V6 4.3L RWD Automatic & Manual
SLX Standard Passenger Van 1985 L4 2.5L RWD Automatic & Manual
SLX Standard Passenger Van 1985 - 1989 V6 4.3L RWD Automatic & Manual
Oldsmobile 1 model (tapclick to expand)(tapclick to hide)
Cutlass Supreme 1990-1991 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Convertible 1991 L4 2.3L FWD Automatic & Manual
Base Convertible 1991 V6 3.1L FWD Automatic & Manual
Base Convertible 1991 V6 3.4L FWD Automatic & Manual
Base Coupe 1991 V6 3.4L FWD Automatic & Manual
Base Coupe 1990 - 1991 L4 2.3L FWD Automatic & Manual
Base Coupe 1990 - 1991 V6 3.1L FWD Automatic & Manual
Base Sedan 1991 V6 3.4L FWD Automatic & Manual
Base Sedan 1990 - 1991 L4 2.3L FWD Automatic & Manual
Base Sedan 1990 - 1991 V6 3.1L FWD Automatic & Manual
International Coupe 1991 V6 3.4L FWD Automatic & Manual
International Coupe 1990 L4 2.3L FWD Automatic & Manual
International Coupe 1990 - 1991 V6 3.1L FWD Automatic & Manual
International Sedan 1991 V6 3.4L FWD Automatic & Manual
International Sedan 1990 L4 2.3L FWD Automatic & Manual
International Sedan 1990 - 1991 V6 3.1L FWD Automatic & Manual
SL Coupe 1991 V6 3.4L FWD Automatic & Manual
SL Coupe 1990 - 1991 V6 3.1L FWD Automatic & Manual
SL Sedan 1991 V6 3.4L FWD Automatic & Manual
SL Sedan 1990 - 1991 V6 3.1L FWD Automatic & Manual
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

Policies, in plain English.

Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Lifetime Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.

Returns (120 Days)

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.
Our products are engineered and tested to provide years of trouble free operation. Backed by over 50 years of mobile a/c experience, fix it once and fix it right with Four Seasons.

Interchange Parts

Brand Part Number
ACDelco 11R777
Dorman 740493
Gilmore Products 78359
Siemens WR40493
Siemens WR40495
Visteon 200020
Volkswagen 4A0837462B

Fits Years: 1985 1986 1987 1988 1989 1990 1991

Fits Models: Cutlass Supreme, Safari

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If it doesn't fit, we make it right. No gimmicks, no fine print.

120
Day Return Window

4× the Industry Standard

Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.

NEW
Direct-Fit Replacement

Engineered To OEM Specs

Brand-new aftermarket parts from trusted suppliers — built to original-equipment specifications so they fit and function like the factory unit, at a fraction of the price.

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