Heater core for the 1988 to 1998 C/K (GMT400) trucks with factory HVAC.

Part numbers

Four Seasons KJ419RV. No confirmed GM OEM number yet.

Fits

1988 to 1998, all variants with factory HVAC.

Why it matters

A perishable part. When it goes, the leak usually shows up as a damp carpet on the passenger side and a misted up windscreen, sometimes with a sweet smell from the coolant.

What you get

One heater core. Brand Four Seasons.

Give us your VIN if you're not certain on fitment, we'll check it before anything ships.