Engines and Components› Cylinder Heads and Components
Crown Automotive
7/8 Inch Expansion Plug for Select Jeep 72-02 CJs, YJ, TJ, XJ, MJ, SJ, J-Series Crown Automotive
SKU: C01X J3172319
Easy — 1–2 hours
Description
This plug is intended for use in Jeep vehicles with 2.5L or 4.2L engines. It is sold individually, with two plugs typically used per vehicle. The product comes with a 12-month warranty.
Fitment
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Specifications
| Brand | Crown Automotive |
| Part Number | C01X J3172319 |
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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