ARP M8 X 1.25 X 90 Hex Black Oxide Bolts

SKU: 661-1014 | UPC: 672036025359

ARP M8 X 1.25 X 90 Hex Black Oxide Bolts – Fits 2002-2006 Acura RSX Type-S & 2006-2011 Honda Civic Si K20

ARP M8 x 1.25 x 90mm hex head black oxide bolts secure throttle body and intake manifold on K20 engines in 2002-2006 Acura RSX Type-S and 2006-2011 Honda Civic Si. They withstand high-rpm stress and boost pressure for dependable performance. This 10-pack supports full installs or spares during K20 engine builds.

Key Features

• High-Strength Steel: Forged from 8740 chrome moly alloy with 180,000 PSI tensile strength for repeated torque cycles without failure
• Precision Threads: Rolled threads deliver accurate fit and clamping load to prevent loosening in performance engines
• Black Oxide Finish: Resists corrosion and galling while maintaining clean appearance under the hood
• Hex Head Design: Standard 13mm socket compatibility speeds up installation with common tools
• 90mm Length: Matches exact requirements for K20 throttle body to intake manifold spacing

Product Notes

• Kit includes 10 bolts for complete throttle body replacement or extras
• Apply ARP Ultra-Torque assembly lube to threads for even preload
• Packed in protective ARP box for safe handling and storage

Installation Notes

• Professional installation recommended.
• Torque to 22-25 ft-lbs in a crisscross pattern following OEM sequence
• Compatible with factory washers and intake hardware

This Part Fits

Year	Make	Model	Submodel
2002-2006	Acura	RSX	Type-S
2002-2005	Honda	Civic	Si EP3
2006-2011	Honda	Civic	Si

Why Choose ARP?

• Performance fasteners trusted in NHRA Top Fuel and Formula 1 since 1968
• Every bolt tested for tensile strength and fatigue resistance
• Made in USA with tight tolerances for consistent results

Frequently Asked Questions

• Q: Will these bolts fit my 2006-2011 Honda Civic Si K20Z3 throttle body?
  A: Yes, the M8 x 1.25 x 90mm size matches OEM specs perfectly for secure throttle body mounting on K20Z2 and K20Z3 engines.
• Q: What material and strength rating do these bolts have?
  A: Constructed from 8740 chrome moly steel with black oxide coating and minimum 180,000 PSI tensile strength for high-performance durability.
• Q: What is the ARP warranty on these bolts?
  A: ARP provides a limited lifetime warranty against defects in materials and workmanship when installed and torqued correctly.

Shipping & Handling

• Method: UPS Ground or USPS Priority Mail
• Availability: In stock – ships same or next business day
• Packaging: ARP kit box 6 x 4 x 1.5 inches
• Weight: 0.7 lbs