(1937-65) Heat Riser Spring - 6 Cylinder

Part #
89-425
In stock
Price:
$19.95
Heat Riser Spring for 1937-65 Chevy Truck Controls heat riser valve. Mounts on outside of exhaust manifold. Fits beside the 6 cylinder exhaust manifold. This bi-metallic spring will open and close the heat damper in the exhaust manifold depending on t...Read More Below
Vehicle Fits:
  • 1937-1954, 1956-1965 Chevy Truck
  • 1937-1954, 1956-1965 GMC Truck
  • 1955 First Series Chevy Truck
  • 1955 First Series GMC Truck
  • 1955 Second Series Chevy Truck
  • 1955 Second Series GMC Truck

Product Description

Heat Riser Spring for 1937-65 Chevy Truck


Controls heat riser valve. Mounts on outside of exhaust manifold. Fits beside the 6 cylinder exhaust manifold. This bi-metallic spring will open and close the heat damper in the exhaust manifold depending on the engine temperature. Ready to install. NOTE: Many of these springs are lost or broken and thus the damper shaft is frozen in one position. This can usually be easily corrected. Heat the shaft where it comes out both sides of the manifold with a mild temperature torch. Slowly begin to move this shaft with a pair of Vise-grips or equivalent. Once the rust film is broken loose, it should turn easily and our spring can be attached after cooling. Graphite is a good lubricant!

Product Details

More Information
SKU 89-425
Additional Fitment Information 37-65

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warning Cancer and Reproductive Harm - P65Warning.ca.gov
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