Engine Girdles

An engine girdle is a structural reinforcement plate that ties the main bearing caps together, adding rigidity to the engine block’s bottom end. By reducing crankshaft deflection and main cap walk, a girdle helps extend bearing life and maintain precise clearances under high cylinder pressures—especially in turbocharged, supercharged, or high-rpm applications.

When choosing a girdle, key factors include:

  • Material & Construction: Billet aluminum or chromoly steel; thicker plates offer greater stiffness.
  • Hardware Included: Some kits come with upgraded studs or bolts for increased clamping force.
  • Compatibility: Check clearance for oil pan, oil pickup, and windage tray; may require block machining.
  • Application: Street/strip, drag racing, or sustained high-load use—match the girdle to your power level.

Our collection includes girdles for a range of popular engine platforms. Browse to find the right reinforcement for your build.

$
-
$
0 selected
0 selected
Apply (0)
Industrial Injection 12mm thick steel Gorilla Girdle with a complete set of ARP XL main studs and mounting hardware.
$1,321.09 $1,361.95
-3%
Low in stock

Can’t Find the Part You Need?

Our catalog represents only a portion of the automotive products available through our supplier network. If you cannot find a specific part, brand, or application on our website, submit a request below, and our team will help source it for you.

Please include as much information as possible, such as your vehicle's year, make, model, trim, engine, desired brand, or part number, to help us quickly identify the correct product.

Email is invalid

Image alt