ARP M8 x 1.25 12pt Nut Kit (10/pkg)

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