Goodmark/ProEFX
HEATER BLOCK OFF PLATE SET; 2 PIECE
SKU: G00Z GMK4030374641S
Beginner — under 30 min
Description
This set is intended for vehicles without air conditioning and serves as a direct-fit replacement component. It is compatible with select 1964-1979 Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models.
Fitment
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Specifications
| Brand | Goodmark/ProEFX |
| Part Number | G00Z GMK4030374641S |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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