






🛠️ Upgrade your LS engine’s oil flow game—because clean oil means peak power!
The Improved Racing GM Gen III & IV LS Billet Rear Passage Plug Oil Diverter Barbell is a precision CNC-machined billet aluminum replacement part designed to eliminate dirty oil bypass in GM LS Gen III & IV engines. Featuring a double O-ring seal for leak-proof performance and a threaded removal hole for easy maintenance, this USA-made component ensures cleaner oil flow and enhanced engine reliability.








| Manufacturer | Improved Racing |
| Brand | Improved Racing |
| Item Weight | 0.95 ounces |
| Package Dimensions | 4.84 x 3.82 x 0.51 inches |
| Item model number | EGM-501 |
| Manufacturer Part Number | EGM-501 |
| OEM Part Number | 12573460 |
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