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SKU: 300-8312 | UPC: 672036020347
ARP M8 x 1.25 12pt Nut Kit (10/pkg) - Fits BMW E36 E46 3-Series M3 Z3
This ARP M8 x 1.25 12-point nut kit includes 10 nuts for secure fastening on exhaust manifolds and headers. Designed for BMW E36 E46 3-Series M3 and Z3 models these nuts handle high heat vibration and repeated torque cycles. Engine builders rely on ARP hardware for consistent performance in demanding builds.
Key Features
- 12-Point Head Design: Delivers secure grip for maximum torque without stripping even under high stress
- 8740 Chromoly Steel: Heat-treated to 180000 psi tensile strength resists fatigue in extreme engine environments
- Precision M8 x 1.25 Threads: Matches ARP studs and OEM bolts for flawless fit and even clamping
- Black Oxide Finish: Protects against corrosion in wet oily engine bays for long service life
- 10-Piece Kit: Provides exact quantity needed for most dual exhaust manifold or header jobs
Product Notes
- Pair with ARP studs like 256-4301 for BMW header applications
- Replace during header removal to restore full clamp load
- Lightweight kit ships without restrictions or delays
Installation Notes
- Professional installation recommended.
- Clean threads apply ARP Ultra-Torque lubricant follow torque sequence
- Use 12-point socket torque to 22-25 ft-lbs per ARP specs recheck after heat cycles
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1992-1999 | BMW | 3 Series | E36 318i 325i 328i |
| 1995-1999 | BMW | M3 | E36 |
| 1999-2006 | BMW | 3 Series | E46 323i 325i 328i 330i |
| 2001-2006 | BMW | M3 | E46 |
| 1996-2002 | BMW | Z3 | 2.8 3.0 M |
| 1997-2003 | BMW | 5 Series | E39 |
Why Choose ARP?
- ARP hardware powers championship-winning race engines globally
- Proprietary forging and heat treatment deliver unmatched durability
- Every fastener meets strict tolerances for repeatable performance
Frequently Asked Questions
-
Q: Does this kit fit OEM BMW E36 E46 exhaust studs?
A: Yes M8 x 1.25 threads match factory studs on E36 E46 3-Series M3 and Z3 headers manifolds -
Q: What material and strength rating?
A: Forged 8740 chromoly steel heat-treated to 180000 psi tensile strength handles racing heat vibration -
Q: What tools and torque specs for install?
A: Requires 12-point socket wrench torque to ARP spec 22-25 ft-lbs with Ultra-Torque lube re-torque after 100 miles
Shipping & Handling
- Method: UPS Ground USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective polybag in 3 x 3 x 1 inch box
- Weight: 0.25 lbs
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