ARP M8 X 1.25 X 90 Hex Black Oxide Bolts ARP ARP661-1014
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ARP M8 X 1.25 X 90 Hex Black Oxide Bolts

ARP
ARP661-1014
672036025359
Hardware Kits - Other
3 Units In Stock - Ships Next Business Day
$ 20.55
$ 20.55

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

Request For Information

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