Engines and Components› Engine Covers, Pans and Dress-Up Components
Bostech Fuel
~(0.5 lbs. 6X2X2)~ GM Valve Cover Bolt Insulator
SKU: B057 DEC011638
Easy — 1–2 hours
Description
This product includes 28 insulators in total, with 14 insulators per side. It is also included in valve cover gasket kit #GK01341K for LLY, LBZ, and LMM engines. Bostech offers a limited 13-month warranty with unlimited mileage for this component.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Bostech Fuel |
| Part Number | B057 DEC011638 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy