ARP M8 x 1.25 12pt Nut Kit

SKU: 300-8310

ARP M8 x 1.25 12pt Nut Kit for 1988-2001 Honda Civic Acura Integra B/D-Series Engines

ARP M8 x 1.25 12pt Nut Kit SKU 300-8310 includes 10 precision nuts designed for high-performance engine builds on Honda B-series and D-series engines in 1988-2001 Civic and 1990-2001 Integra models. These nuts secure ARP rod bolts main studs and cylinder head studs with consistent clamping force under high torque and RPM for dependable power in racing applications. Weighing just 0.25 lbs the kit delivers strength without excess weight.

Key Features

• Forged 8740 Chromoly Steel: Handles extreme tensile loads and resists fatigue in boosted high-horsepower B16 B18 D16 engine setups
• 12-Point Design: Delivers firm tool grip to prevent rounding and enable accurate torquing on rod bolts and main studs
• Heat Treated: Achieves uniform hardness ductility and durability for long-term performance in high-stress conditions
• Precise M8 x 1.25 Threads: Provides exact match to ARP metric fasteners on rods mains and cylinder heads
• 10 Nuts Per Kit: Supplies complete set for connecting rods or main studs on B-series and D-series four-cylinder engines

Product Notes

• Pair with ARP bolts or studs for performance engine assemblies
• Apply ARP Ultra-Torque lubricant on threads for accurate torque values
• Lightweight design ships in compact protective box 3 x 4 x 1 inches

Installation Notes

• Professional installation recommended.
• Torque nuts to ARP specifications using calibrated wrench and thread lube.
• Compatible only with M8 x 1.25 ARP studs and bolts verify pitch before use.

This Part Fits

Year	Make	Model	Submodel
1988-1991	Honda	Civic	Si CRX Si
1992-1995	Honda	Civic	Si EX Del Sol VTEC
1996-2000	Honda	Civic	EX Si
1999-2000	Honda	Civic	Si EM1
1990-1993	Acura	Integra	LS GS RS
1994-2001	Acura	Integra	GS-R Type R

Why Choose ARP?

• Proven in NHRA NASCAR and import drag racing for decades
• Made in USA with aerospace-grade manufacturing standards
• Engineered for precision fit and strength in extreme engine environments

Frequently Asked Questions

• Q: Will this kit fit Honda B18C or B16A engines in Civics and Integras?
  A: Yes it matches M8 x 1.25 rod bolts and main studs on B-series D-series engines in 1988-2001 Civic and 1990-2001 Integra models
• Q: What material and finish do these nuts have?
  A: Forged 8740 chromoly steel heat treated with black oxide finish for corrosion resistance and strength
• Q: What warranty comes with ARP 300-8310 nuts?
  A: Limited lifetime warranty against manufacturing defects and fatigue failure when installed torqued per ARP guidelines

Shipping & Handling

• Method: UPS Ground USPS Priority
• Availability: In stock – ships same or next business day
• Packaging: Compact protective box 3 x 4 x 1 inches
• Weight: 0.25 lbs