Vacuum Closes Bypass Heater Valve - FOUR SEASONS (74797)

Sale Price$20.46
Description : 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.
Vacuum Closes Bypass Heater Valve
Heater Valve - Vacuum
Chevy EXPRESS 1500 SERIES VAN (96); EXPRESS 2500 SERIES VAN (96); EXPRESS 3500 SERIES VAN (96); G10, G1500 SERIES VAN (96-90); G20, G2500 SERIES VAN (96-90); G30, G3500 SERIES VAN (96-90); P20 SERIES VAN (89-88); P30 / P30 Step Van (96-88);
Check Valve, Heater Valve
Vacuum Closes Bypass Heater Valve
Heater Valve - Vacuum
Chevy EXPRESS 1500 SERIES VAN (96); EXPRESS 2500 SERIES VAN (96); EXPRESS 3500 SERIES VAN (96); G10, G1500 SERIES VAN (96-90); G20, G2500 SERIES VAN (96-90); G30, G3500 SERIES VAN (96-90); P20 SERIES VAN (89-88); P30 / P30 Step Van (96-88);
Check Valve, Heater Valve
- Return Policy
- Min. 12 Months
- Safe, Secure Checkout
Product Details
Description
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.
Vacuum Closes Bypass Heater Valve
Heater Valve - Vacuum
Chevy EXPRESS 1500 SERIES VAN (96); EXPRESS 2500 SERIES VAN (96); EXPRESS 3500 SERIES VAN (96); G10, G1500 SERIES VAN (96-90); G20, G2500 SERIES VAN (96-90); G30, G3500 SERIES VAN (96-90); P20 SERIES VAN (89-88); P30 / P30 Step Van (96-88);
Check Valve, Heater Valve
Vacuum Closes Bypass Heater Valve
Heater Valve - Vacuum
Chevy EXPRESS 1500 SERIES VAN (96); EXPRESS 2500 SERIES VAN (96); EXPRESS 3500 SERIES VAN (96); G10, G1500 SERIES VAN (96-90); G20, G2500 SERIES VAN (96-90); G30, G3500 SERIES VAN (96-90); P20 SERIES VAN (89-88); P30 / P30 Step Van (96-88);
Check Valve, Heater Valve
Features & Benefits
- Temperature tested to 270 degrees F
- Pressure tested to ensure leak free design
- Vacuum controlled
- Application specific design
Part Number (MPN)
74797
Brand
SKU
74797
UPC / GTIN
096361747975 / 00096361747975
Condition
New
Position
Front
Brand
Four Seasons
Bypass?
Yes
Description
Vacuum Closes Bypass Heater Valve
Material
Plastic
Number Of Connectors
4 Connectors
O.e. Replacement?
Yes
Opening B In
0.75
Opening B Mm
19.05
Opening C In
0.625
Opening C Mm
15.88
Opening D In
0.625
Opening D Mm
15.88
Opening In
0.75
Opening Mm
19.05
Operation Type
Vacuum
Style
Bypass
UPC
00096361747975
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|---|---|---|---|
Vehicle #1
Year
Make
Model
Body & Trim
Engine & Transmission
| Brand | Equivalent Part Numbers |
|---|---|
BrandEquivalent Part Numbers
1-800-Radiator
OTH-1691
ACDelco
155397, 155536, 15-71347
Austin Baker Industries
13003201, 13003202
Autopart International
7174797, CWK801707
BAK
13003201, 13003202
Balkamp
6601281
Bergstrom
869615
Shipping Policy
Operated by RevolutionParts Inc · Effective date: 11/2025 · Last updated: 4/2026... Check out our Shipping Policy for more details.
Return Policy
At PartsDirect.parts, operated by RevolutionParts Inc, we want you to be completely satisfied with your purchase. This policy outlines how to cancel orders, initiate returns, and receive refunds. Please read it carefully before completing your purchase... Check out our Return Policy for more details.

