SKU: 146-3601 | UPC: 672036042264
ARP Cylinder Head Bolt Kit for Jeep 4.0L (242 cid) Inline 6 1987-2006 – 1/2˝
This ARP cylinder head bolt kit delivers secure clamping for Jeep 4.0L inline-six engines in models from 1987 to 2006. Precision 1/2-inch bolts from 8740 chrome moly steel resist fatigue in high-compression builds or daily drivers. Complete with hardened washers for even load distribution and leak-free performance.
Key Features
- Material: 8740 chrome moly steel withstands extreme cylinder pressures
- Strength: 180,000 PSI rating exceeds Grade 8 bolts by 15 percent
- Head Design: Wide flanged heads enable retorquing without valve train removal
- Fastener Specs: 1/2”-20 thread x 4.000-inch under head length quantity 10
- Included Hardware: Hardened parallel-ground washers ensure precise torque application
Product Notes
- ARP thread lubricant recommended for accurate torque values
- Inspect head gasket surface before installation for flatness
- Ships in protective packaging to prevent damage
Installation Notes
- Professional installation recommended.
- Torque to ARP specifications using calibrated torque wrench
- Compatible with OEM and aftermarket aluminum cylinder heads
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1987-2001 | Jeep | Cherokee | XJ |
| 1988-1992 | Jeep | Comanche | MJ |
| 1993-1998 | Jeep | Grand Cherokee | ZJ |
| 1999-2004 | Jeep | Grand Cherokee | WJ |
| 1991-1995 | Jeep | Wrangler | YJ |
| 1997-2006 | Jeep | Wrangler | TJ |
Why Choose ARP?
- Fasteners trusted in professional racing for decades
- Each bolt precision-forged and heat-treated for consistency
- USA manufacturing guarantees exact fit and durability
Frequently Asked Questions
- Q: Does this fit 2004 Grand Cherokee 4.0L?
A: Yes covers all WJ Grand Cherokee models 1999-2004 with 4.0L engine - Q: What finish and thread specs?
A: Black oxide finish on 1/2”-20 x 4.000-inch UHL bolts resists corrosion - Q: What warranty applies?
A: ARP limited warranty covers defects in materials and workmanship
Shipping & Handling
- Method: UPS Ground
- Availability: In stock – ships same or next business day
- Packaging: Secure ARP box
- Weight: 2.1 lbs
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