Summit Racing SpeedCard - learn how to get 10% back up to $100

Summit Racing SpeedCard - learn how to get 10% back up to $100

Beef up Your Bronco With These Deals - Shop Now!

GMC Fittings & Plugs

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Earl's Performance LS Steam Vent Adapters

The original GM brazed vent tube manifold does not take into consideration the aftermarket intakes and accessories we put on our performance vehicles. Replace the rigid hard lines with Earl's Performance LS steam vent adapters. These adjustable outlets are O-ring seal adapters designed to convert to -3 or -4 AN plumbing. Earl's steam tube adapters are the most adjustable and lowest profile available. These adapters look as nice as they are installation-friendly. There are several kits available to allow for the optimal routing on your application, including dual outlet options, which eliminate the need for a Tee adapter.

4.67 out of 5 stars ( 18 )

$64.98

$76.45

Lisle Fuel Injector Rail Fuel Line Cap Sets

Lisle fuel injector rail fuel line cap sets are used to block off the fuel rail during fuel pressure diagnostics in a variety of Cummins, Duramax, and Ford Powerstroke engines. They help in identification of faulty diesel fuel injectors and are used to diagnose engine knock sounds. Simply install the cap on the fuel rail in the place of the injection line; when the cylinder with the failed injector is capped, the rail pressure will rise and the vehicle will start. Each set comes with five different caps.

Not Yet Reviewed

$64.99

Earl's Performance Transmission Cooler Line Adapters

Earl's Performance transmission cooler line adapters make your plumb job easier. Integrating into the transmission and adapting to AN lines allows additional tunnel clearance and freedom that the original hard lines cannot. These adapters are available for many plumbing situations and custom applications. They're machined from high-quality materials, including nickel plated steel or billet aluminum with a black anodized finish, and have high-pressure capabilities. Order the adapter size and configuration needed for your application.

4.42 out of 5 stars ( 33 )

$70.79

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