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ARP (Automotive Racing Products) makes the strongest fasteners in motorsport — head studs, main studs, rod bolts, and flexplate bolts used by every Formula 1, NHRA, NASCAR, and championship motorsport program. Aerospace-grade alloys, exact-fit machining.
The bottom end of your Jeep 4.0L engine is subjected to immense stress during operation. The ARP Jeep 4.0L Main Stud Kit is the gold standard for engine builders looking to increase the structural integrity of the main bearing caps. By replacing factory main bolts with these high-strength studs, you ensure that the main caps remain perfectly aligned, reducing bearing wear and preventing catastrophic engine failure under load.
Engine builders know that the foundation of a high-performance motor lies in the bottom end. These main studs are designed to handle the increased power output of modified engines, providing a level of security that standard hardware simply cannot match. Each kit is precision-machined to exacting tolerances, ensuring a drop-in fit for your Jeep 4.0L block. The use of studs also makes it significantly easier to align the main caps during the assembly process, saving you time and frustration in the shop. Upgrade your engine's foundation with professional-grade hardware from GGCRACING.
| Brand | ARP |
|---|---|
| Manufacturer part number | 146-5401 |
| GGC SKU | ARP146-5401 |
| UPC / GTIN | 672036041908 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 8.6 × 4.2 × 2.4 in |
|---|---|
| Shipping weight | 3.9 lb |
Universal fit — check measurements. Compare the dimensions and specifications on this page with your application before you order.
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