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SKU: 674-1010 | UPC: 672036041281
ARP M12 x 1.50 x 90 12pt Black Oxide Bolts for BMW M3 E46 E90 Porsche 911 GT3 (5/pkg)
These ARP M12 x 1.50 x 90mm 12-point black oxide bolts come in a pack of 5 for securing rocker arm shafts and other engine hardware on BMW M3 and Porsche 911 GT3 models. Built from high-tensile alloy steel, they maintain secure clamp load during high-rpm operation and repeated heat cycles. Enthusiasts rely on them for engine rebuilds in street and race applications.
Key Features
- 12-Point Head Design: Delivers secure grip with 18mm socket for precise torque application without rounding
- Precision-Rolled Threads: Provides full thread engagement and repeatable preload for consistent performance
- Black Oxide Finish: Resists corrosion from oil, fuel, and moisture in demanding engine bays
- High-Tensile Strength: ARP 2000 material rated at 200,000 PSI handles extreme vibration and loads
- Under Head Length 70mm: Exact fit for rocker shafts with removable nut seat for easy service
Product Notes
- Verify hole threads measure M12 x 1.50 before install
- Torque check recommended after 100-500 miles of use
- Compact low-weight pack simplifies handling and storage
Installation Notes
- Professional installation recommended.
- Clean threads thoroughly and apply ARP Ultra-Torque lubricant
- Torque to 52-60 ft-lbs in sequence per application using 12pt socket
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2001-2006 | BMW | M3 | E46 S54 |
| 2008-2013 | BMW | M3 | E90 E92 E93 S65 |
| 1999-2005 | Porsche | 911 | GT3 996 Mezger |
| 2006-2012 | Porsche | 911 | GT3 997 Mezger |
Why Choose ARP?
- Backed by decades in professional motorsports
- Every bolt undergoes extensive strength testing
- Direct replacement in factory ARP engine kits
Frequently Asked Questions
-
Q: Do these fit BMW E46 M3 rocker shafts?
A: Yes, M12 x 1.50 x 90mm size matches S54 rocker arm bolts exactly, 5 per side needed -
Q: What material and finish details?
A: Heat-treated 8740 chrome moly steel with black oxide coating, 200,000 PSI tensile rating -
Q: What torque specs apply?
A: Use ARP Ultra-Torque lube and torque to 55 ft-lbs in crisscross pattern, recheck after heat cycles
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective poly sleeve in small box approx 4 x 3 x 1 inches
- Weight: 0.15 lbs
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