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ACDelco 15 63539 Original Equipment Heater Review

3

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Poor

Revainrating 2.5 out of 5  
Rating 
2.7
🌡️ Engine Cooling & Climate Control, 🛠️ Replacement Parts

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Description of ACDelco 15 63539 Original Equipment Heater

Long-life alloys provide corrosion resistance. High-strength brazed joints ensure durability. GM-recommended replacement part for your GM vehicle’s original factory component. Offering the quality, reliability, and durability of GM OE. Manufactured to GM OE specification for fit, form, and function.

Reviews

Global ratings 3
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  • 4
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  • 3
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Type of review

Revainrating 1 out of 5

Also a good radiator

The part was the same size as the original but the hose connections were different. I replaced the original part with a new part. In addition, a good radiator.

Pros
  • Engine cooling and air conditioning
Cons
  • Fits

Revainrating 4 out of 5

The original heating hose quick couplings could not be reused.

Core heater hose quick disconnects could not be reused. It appears that AC Delco has grommets on the inlet and outlet pipes that require the use of their connectors. Check the original inlet/outlet pipes before purchasing or purchasing the correct Delco AC heated hose quick disconnects.

Pros
  • Heater
Cons
  • Reliability

Revainrating 3 out of 5

Check screw connections first

Article was in good condition including seals. However, check the intake and exhaust fittings in the engine at the firewall to make sure they are correct for you. I have a 2004 Colorado, I had a 5/8 and 3/4 from the factory, this part has a 5/8 for the bolt. Were you told it was a mid-year model change? It's not that hard to create your own faucet, but it's not necessary. Otherwise a quality replacement part with no problems.

Pros
  • Spare parts
Cons
  • ---