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Old Air Products

Cable Operated Bypass Heater Valve for 5/8" Heater Hose, Pull to Open #25-1018

Based on 37 reviews
Condition: New
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$59.25
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Availability: In Stock.
Fulfilled by Old Air Products
Arrives Nov 7 – Nov 11
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At a glance

Condition
New
Model
25-1018
Dimensions
7 x 7 x 7 in
Weight
1.5 lb

Features 1

  • Allow Coolant to Bypass heater core to reduce heat inside the vehicle THIS BYPASS HEATER VALVE IS EXCELLENT FOR LS ENGINE SWAPS

Description

Our Universal Fit Cable Operated Bypass Heater Valve, Pull to Open Bypass heater valves allow complete control of coolant flow to regulate heater temperature and completely bypass the flow of coolant through heater core to maximize the A/C system performance. The non-corrosive valve is easy to install and fits all vehicles with 5/8" heater hose and includes adapter sleeves for use with 3/4" heater hose. (Cable sold separately)Our valves offer the quality, reliability and durability of OE. Restore A/C performance due to restricted or failing components.Made in the USA! THIS BYPASS HEATER VALVE IS EXCELLENT FOR LS ENGINE SWAPS

Specs 7

Manufacturer Old Air Products
Brand Old Air Products
Model Heater Valve
Item Weight 1.5 pounds
Product Dimensions 7 x 7 x 7 inches
Item model number 25-1018
Manufacturer Part Number 25-1018

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Nov 7 – Nov 11

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

nice and toasty
Bought this for my Subaru swapped Vanagon. This valve does what it is supposed to do. Keeps the Subaru engine happy and keeps the heat out of the cabin when I don't want it.
Reviewed in the United States on March 26, 2024 by Real Name
Fits
My chevy luv heater control broke and would leak everywhere. There are no stock heater controls in any store. I saw someone talk about this control valve online and decided to give it a try. It works perfectly in my truck and the heater blows hot. I still need to find a way to adapt it into the truck since it obviously not made to mount under the hood. Overall great buy. ... show more
Reviewed in the United States on February 13, 2023 by joshua navarro
Works great
Working real good on my 1954 Chevy Rat Rod. Isolates heat from heater core as it should.
Reviewed in the United States on November 30, 2025 by obars
Best Coolant Valve So Far
Installed to a 1966 Ford F100 with a Classic Auto Air conditioning system to help regulate interior temperature. The best so far. It's hard to regulate temperature with coolant flow since engine speed is always changing.
Reviewed in the United States on August 16, 2024 by Chaotic1
Nice bypass valve.
Great product and much cheaper price than several other vendors. Works perfectly!
Reviewed in the United States on July 8, 2017 by Rich
Great heat valve works great
Great heat valve works great
Reviewed in the United States on July 2, 2019 by Scott B.
Cable doesn’t come with it
I bought this valve and the cable that was recommended by Amazon. There is no good way to bend a loop in the cable to connect it. I tried a search for a cable with a loop in the end, so far no luck. It would be a good valve if it came with a cable that fits.
Reviewed in the United States on July 20, 2024 by Southern Bell
Works great with oem climate control
I installed this in a Volvo 240. (Video on YouTube) The heater and components needed replacing. So this was the best “race car” option I could find for what was needed. It’s mechanical operation works great with the oem climate control lever. 4 stars as, Item is as it’s described, and works great so far. But Would buy again if I needed another one. ... show more
Reviewed in the United States on March 26, 2023 by BatesRacingDev.
How it works
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