Skip to main content
5
Images
Holley

Holley 97-425 Heater Block Off Kit

Compatible with 2020-2022 Ford® Godzilla 7.3L Gasoline V8 Engines. This product is not created or sold by Ford®.

Part # 97-425

Holley 97-425 Heater Block Off Kit

In Stock
Free Shipping on orders over $150*
$15.19
Add to Wishlist
Does it fit my vehicle?
5

Emissions

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

See Emissions Details
Some engine swaps and racing applications do not need the heater, but it is tough to block off with the 7.3-liter Godzilla engine. The factory rear hose port is retained with a bolt (and the port is not tapped), and the front port is a tube with a hose barb that isn't removable. This kit includes a billet plug with an o-ring seal retained by a bracket and bolt, and the second plug is a rubber cap with a billet cover that clamps over the tube. These caps and plugs provide a more attractive appearance than other options.

Features:

  • Elimination of the heater is difficult on the 7.3-liter Godzilla engine since the hose inlet and outlet passages are tough to plug & look cobbled up using traditional hoses, clamps, and plugs
  • Machined steel billet plug with o-ring seal, mounting bracket, and retaining bolt – blocks off the rear port
  • Plug and caps designed to handle high pressure & high temperature – typical conditions of the cooling system
  • Easy Installation without the need to tap holes or fabricate special plugs and caps
  • Steel plug features a clear zinc plated finish, and the billet aluminum cap is black anodized – for a more attractive finished look (than other options)
  • Ideal for use in engine swaps or racing applications that do not require a heater
Brand Holley
Emission Code5
6
Engine FamilyFord 7.3 Godzilla
Product TypeHeater Block Off Kits
QuantitySold as a Kit
UPC090127136614
Manufacturer Part Number97-425
Part Number97-425
5

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.
Instructions for 97-425

We Suggest

*Free Shipping & Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.