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ARP 135-3709 Cylinder Head Bolt Kit High Performance 8740 Chrome Moly 12-Point

Manufacturer

Picture for manufacturer ARP

Part Number

135-3709
13 reviews
Sale Price

$138.33

1 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The ARP 135-3709 High Performance Series cylinder head bolt kit delivers professional-grade fastening reliability for demanding engine builds. Engineered from premium 8740 chrome moly steel and rated at 180,000 psi—15% stronger than Grade 8—these fasteners provide exceptional clamping force and durability for high-performance applications.

Advanced Manufacturing Process:

  • Premium 8740 chrome moly alloy rated at 180,000 psi tensile strength
  • Precision heat-treated using vertical rack process for complete, uniform heat penetration
  • Thread rolled after heat-treat for superior fatigue resistance
  • 12-point head design for precise torque application
  • Wide-area flanged head eliminates need for valve train removal during retorquing
  • Centerless ground for exceptional concentricity and alignment

Complete Kit Includes:

  • Application-specific quantity of head bolts
  • Hardened parallel-ground washers for even load distribution
  • ARP Ultra-Torque fastener assembly lubricant

Performance Benefits:

  • Superior clamping force maintains head gasket seal integrity
  • Precise manufacturing tolerances ensure perfect cylinder head alignment
  • Reduced wrenching profile allows retorquing without disassembly
  • Consistent torque loading for reliable, repeatable installations
  • Wide flange design accommodates larger diameter valve springs

Each ARP fastener is manufactured to exacting tolerances and stamped with the ARP logo as assurance of quality. The 12-point head design provides multiple engagement positions for accurate torque wrench positioning in tight engine compartments. Hardened washers ensure accurate torque readings and prevent embedment into softer aluminum cylinder head materials.

ARP head bolts are the preferred choice of professional engine builders across all forms of motorsports, delivering the strength and consistency required for high-performance and racing applications. Note that cylinder heads should be retorqued after initial engine warm-up to compensate for head gasket compression.

Products specifications

Cut to Fit

No

Fastener Finish

Black oxide

Fastener Material

Chromemoly

Fastener Style

Bolt

Head Style

12-point

Quantity

Sold as a kit.

Washers Included

Yes

Shopping experience has been great. Easy site to navigate and user friendly check out process. Thanks. Paul K

Fast shipping A+++

excellent service A+++++

PICTURE ON WEB PAGE IS VERY CONFUSING TO WHAT I WANTED TO ORDER- AFTER RECEIVING ITEM, NOT WHAT I NEEDED. THE REP ON THE PHONE WAS HELPFUL TO FIND CORRECT ITEM I WILL BE PLACING ORDER FOR THAT ITEM( WHICH I WOULD NOT HAVE THOUGHT WAS CORRECT BY PICTURE ON WEBSITE). I AM WAITING FOR A RETURN VERIFICATION (I SUBMITTED FOR A RETURN) MIKE

Receive the item very quickly but I had problems with vehicle and was not able to use merchandise so I am going to return for refund

Smooth!

I like that i was able to just buy what i needed

Easy and quick

quick and easy had everything I needed in stock

Good fast shipping. Easy ordering.

I ordered fuel rails from autoplicity they had the best price around and shipped out fast I definitely plan on buying from them again

Fantastic ! Ordered a Weather Tech Cargo Liner for my 2012 Ford Explorer. Price was $60 less here than ALL other sites on web. I was skeptical that this was going to be a counterfeit -- as the price was too good to be true. I was extremely happy to receive the genuine product as I expected in less than a week -- and for $60 less than the competitors ! GREAT VALUE and great service ! I will definitely be back !!

Wow Super fast shipping, right product, no hassle no fuss. just how i like it. good job autoplicity keep it up.

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