Description
Comparison points and tradeoffs
When comparing Four Seasons 74643 Heater Valve with other Heater Control Valves options, use this source-backed detail as the primary discriminator: The Package Length of the Product is 6.5 inches.
Use this second fact to evaluate the tradeoff: Category: Replacement Parts / Engine Cooling & Climate Control / Heating / Heater Control Valves. A third point to compare across alternatives is: The Package Height of the Product is 3.88 inches.
Alternative-selection boundary
Choose an alternative when its stated identifiers, application, package, or specifications better match the requirement; no unverified competitor claim is introduced here.
Complete source-backed product details
The aim of Four Seasons is to offer many high quality products to customers and satisfy the needs of all customers. To achieve this, Four Seasons will spend more time to design the products. You will find more and more classic products in our store.
Source product highlights
About this item
- The Package Length of the Product is 6.5 inches
- The Package Width of the Product is 5.25 inches
- The Package Height of the Product is 3.88 inches
- Item Package Weight : 0.8 pounds




Alan –
Valve looks great, but won’t mount properly to my 73 Charger. Would have to drill new holes in the fender and get longer heater hose to reach from firewall. I’ll be sending mine back. Amazon says this fits my car. Pay attention to the mounting bracket and compare it to yours before ordering.
Renaissance Man –
Adapted this to work on a 1985 Alumalite. Works as it should!
Hurticus –
Arrived quickly, in good packaging and is made well!
Scott kiersey –
Not quite right for my application but nothing else was either
Bruce Klassen –
Exact replacement of my old worn out one.
J&J –
It did not fit the application as stated but with a little modification It worked perfect.
weliketherain –
Only $56 compared to the plastic OEM valve that cracked and costs $300+ for replica NOS.
Ryan C. –
Good quality product. It didn’t quiet work for me though since the inlet tube is 1/2” and the other 3 are 5/8. I need all four 5/8” unless I want to change hoses etc. Went with a different version from four seasons.
Russ –
The whole point of having 4 hoses hook up to this is so when it’s closed, it bypasses the heater core and sends the coolant back to the engine. But this just stops the flow completely on one side. There is no point in even using the other two ports, you could just run a solid return hose from the heater core straight around it and it would work the same way.
Wile –
Works as expected – valve is smooth to operate. No leaks