Air and Fuel› Fuel Injection Systems and Components - Electronic
Bostech Fuel
GM Injector Seal Kit
SKU: B057 ISK857
Easy — 1–2 hours
Description
This kit covers model years from 2001 to 2004, with specific submodel fitments including C4C042, C4E042, C4U042, and C4V042. It also fits C5C042 and C5E042 submodels within the 2003-2004 model years. The kit is intended for engines where the VIN code is '1'.
Fitment
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Available on iOS & Android
Specifications
| Brand | Bostech Fuel |
| Part Number | B057 ISK857 |
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.
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