Photo - Primary
Click to zoom in

ARP M8 x 1.25 x 35 Black Oxide Hex Bolts (5/pkg)

ARP
ARP661-1004
672036024420
Hardware Kits - Other
8 Units In Stock - Ships Next Business Day
$ 18.79
$ 18.79

SKU: 661-1004 | UPC: 672036024420

ARP M8 x 1.25 x 35 Black Oxide Hex Bolts for Honda Acura K-Series (5/pkg)

These ARP M8 x 1.25 x 35 black oxide hex bolts come in a pack of 5 for secure fastening in high-performance applications. Designed as direct replacements for throttle body and intake manifold mounts on Honda and Acura K20 K24 engines. They provide consistent torque retention and resistance to fatigue under extreme conditions.

Key Features

  • Genuine ARP Fasteners: Forged from 8740 chrome moly steel heat-treated to 200000 PSI tensile strength for dependable clamping force
  • Precision-Rolled Threads: Roll-threaded after heat treat for maximum thread strength and accurate torque values every time
  • Black Oxide Finish: Corrosion-resistant coating protects against rust in harsh engine bay environments
  • Hex Head Design: Standard 13mm hex head allows use of common tools for fast installation
  • Matched Set of 5: Complete pack matches OEM quantity for throttle body or similar hardware kits

Product Notes

  • Inspect mounting holes and surfaces for debris before assembly
  • Store in dry conditions to preserve black oxide finish
  • Compact lightweight packaging ships without damage

Installation Notes

  • Professional installation recommended.
  • Clean threads and apply ARP Ultra-Torque fastener lubricant as specified
  • Torque to ARP or factory specs in proper sequence typically 22-25 ft-lbs for M8

This Part Fits

Year Make Model Submodel
2002-2006 Acura RSX Type-S
2002-2005 Honda Civic Si EP3
2006-2011 Honda Civic Si -
2007-2008 Honda S2000 CR
2002-2006 Honda RSX Base
2004-2008 Honda TSX -

Why Choose ARP?

  • ARP leads in racing fasteners trusted by professional teams worldwide
  • Extensive testing ensures strength beyond OEM requirements
  • Engineered threads resist loosening from vibration and heat

Frequently Asked Questions

  • Q: Will these bolts fit K20 throttle body on 2006+ Civic Si?
    A: Yes ARP 661-1004 is the exact M8x1.25x35 length for K20 K24 throttle body direct bolt-on replacement
  • Q: What steel and finish do these bolts use?
    A: Made from 8740 chrome moly steel with black oxide finish for corrosion protection and high tensile strength up to 200000 PSI
  • Q: What is the ARP warranty and torque procedure?
    A: ARP offers a limited lifetime warranty against manufacturing defects. Use ARP lube torque in cross pattern to 22-25 ft-lbs recheck after heat cycles

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Protective plastic sleeve in branded retail box 4in x 3in x 1in
  • Weight: 0.1 lbs

Request For Information

Have questions about ARP M8 x 1.25 x 35 Black Oxide Hex Bolts (5/pkg)? Fill out the form below and we'll get back to you by the next business day.
ARP Head Studs

ARP Head Studs

ARP head stud kits for internal engine builds are stocked at Black Ops Auto Works. Shop ARP head stud and bolt kits, main stud kits, and rod bolt kits engineered for HEMI, Ford Modular and Coyote, GM LS, Subaru EJ, Honda K and B series, VW/Audi turbo four cylinders, Porsche, BMC, and Renault engines, along with the Ultra-Torque assembly lubricant every kit depends on. Every product is filterable by year, make, model, and engine platform so the correct fastener kit ships the first time. Black Ops Auto Works carries 812 ARP Head Studs SKUs across 8740 chromoly and ARP2000 alloy options. What This Collection Covers ARP head studs replace factory head bolts with precision-machined threaded studs that thread into the block and allow the nut to be torqued concentrically on a stationary fastener, producing more even and repeatable clamping force across the entire head gasket surface than a factory head bolt design. This collection focuses on the internal engine fasteners that hold the ...

View ARP Head Studs Products
Hardware

Hardware

Engine hardware, fasteners, and mounting hardware kits for builds, fabrication, and suspension work are stocked at Black Ops Auto Works. Shop ARP engine bolts and stud kits, suspension mounting hardware from Fox and Rock Krawler, bumper mount kits, tie rod clamps, joint retainer tools, and single and kit-packaged hardware for domestic, import, and off-road platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 945 Hardware SKUs across engine hardware, suspension mounting hardware, and single-piece or kit-packaged fasteners. What This Collection Covers Hardware groups together the fasteners, mounting kits, clamps, and small components that hold engines, suspension systems, and accessories together. This includes ARP engine hardware such as intake manifold bolts and cam bolt kits, suspension mounting hardware from Fox and Rock Krawler for shock and steering stabilizer installs...

View Hardware Products
Hardware Kits - Other

Hardware Kits - Other

Hardware kits and fastener assortments for engine builds, suspension installs, body and trim jobs, and off road rigs are stocked at Black Ops Auto Works. Shop ARP bolt and stud kits, brake caliper hardware, suspension bushing hardware, leaf spring hardware kits, security fastener kits, and general clip and retainer assortments across domestic and import platforms. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 593 Hardware Kits - Other SKUs across engine, suspension, body, and lighting hardware categories. What This Category Covers The Hardware Kits - Other category groups together fastener kits and hardware assortments that do not fall under a single dedicated part category. Coverage spans engine fastener kits like cam bolts and intake manifold bolts, suspension hardware including bushing pivot washers and leaf spring hardware, seat belt mounting hardware, security hardware fo...

View Hardware Kits - Other Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×