Fitment Guarantee
Perfect fit — or your money back

Precision machined from 4041 these main caps are a great upgrade for any JZ engines that's going to be producing more than 1000hp. These caps are designed and machined with ease of installation in mind
You will have to align bore and hone the engine with your local machine shop and you will find care was taken to ensure fitting the thrust bearings isn't a hassle
Designed and machined in the USA
Weight: 10.95lbs
Perfect fit — or your money back
Multi-Carrier Options UPS, FedEx, DHL, and more — you choose
Ordered the wrong size or spec? We’ll help swap it out.
Pay later with Shop Pay, Klarna, or Affirm
RS Garage
SKU: RSG 4001
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