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ARP 151-4201 High Performance Cylinder Head Stud Kit Chrome Moly Steel - 8740

(Ford Bronco 1967, 1980-92, E-350 Econoline 1979, 1981-84, 1991-96, E-150 Econoline 1978, 1980-96, E-250 Econoline 1978, 1980-96 + 7 more models)

Part of: ARP High Performance Cylinder Head Stud Kit Chrome Moly Steel

Other options in this family: ARP 135-4304 ARP 135-4206 ARP 124-4202 ARP 234-4102 ARP 233-4308

Manufacturer

Picture for manufacturer ARP

Part Number

151-4201
13 reviews
Sale Price

$125.58

3 left at this price

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Usually delivered within 2 days

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Product Details

The ARP 151-4201 High Performance Series cylinder head stud kit delivers professional-grade engine fastening reliability for demanding applications. Manufactured from premium 8740 chrome moly steel alloy and heat-treated to 200,000 psi, these studs provide superior clamping force and fatigue resistance for high-performance and competition engines.

Key Features:

  • Premium 8740 chrome moly steel construction rated at 200,000 psi tensile strength
  • 12-point head design for precise torque application and easy installation
  • Vertical rack heat-treatment process ensures complete and uniform heat penetration
  • Centerless ground after heat-treat for exceptional concentricity and straightness
  • Thread rolled after heat-treatment for 10x better fatigue strength versus pre-heat-treat threading
  • Specially undercut shorter studs equalize stretch for consistent clamping force
  • Includes hardened parallel-ground washers for even load distribution
  • Wide-area flanged head design eliminates need for valve train removal during retorquing

Engineering Advantages:

ARP's precision manufacturing process ensures each stud meets exacting tolerances, allowing cylinder heads and gaskets to align perfectly during assembly. The post-heat-treat thread rolling process significantly increases fatigue resistance compared to conventional manufacturing methods. Undercut studs compensate for head gasket compression, helping prevent gasket failures and ensuring optimal engine sealing. Unlike bolts that experience torsional stress during installation, studs stretch only on the vertical axis when the nut is torqued, providing more accurate and consistent clamping force.

Installation Note:

Studs should be installed finger-tight in a relaxed mode—never force them in with a jammed nut. Always re-torque after initial engine run to compensate for head gasket compression.

Trusted by professional engine builders across all forms of motorsports, ARP head studs represent the gold standard in cylinder head fastening technology. Each stud is stamped with the ARP logo as assurance of quality and authenticity.

Products specifications

Fits

Ford Bronco 1967, 1980-92, E-350 Econoline 1979, 1981-84, 1991-96, E-150 Econoline 1978, 1980-96, E-250 Econoline 1978, 1980-96, Custom 500 1968-70, Country Sedan 1965-70, E-100 Econoline 1968-74, 1978, 1980-83, Country Squire 1965-67 + 3 more models

Cut to Fit

No

Fastener Finish

Black oxide

Fastener Material

8740 chromemoly

Fastener Style

Stud

Head Style

12-point

Quantity

Sold as a kit.

Washers Included

Yes

I need this for my 98 Toyota Tacoma just want to make sure it's right for that truck. Same part number I put on my 99 Thanks

AT THIS TIME "GREAT TRANSACTION"

Thank you foryou fast service, and knowledge. I will definitely be shopping again for my automotive supply needs.

good experience questions answered very fast delivery

User friendly

Autoplicity must have sent my Airaid CAI within hours of my order because UPS delivered it right away. I even got it before I received an e-mail indicating the order had been processed or a notification of shipping e-mail. <br><br>The online advertised price seems to vary by about $20 and that means that you must monitor the site if you are to get the lower price. However, Autoplicity has arranged with BuySafe to give you the difference if you establish an account with them and go through the process. This process was not easy as there was an apparent database problem where the Autoplicity URL was not taken by BuySafe. A call to BuySafe got that worked out, I am hopeful that I will receive the refund promised via paypal. It looks like a good system if it works.<br><br>The bottom line is that Autoplicity offers the best online price by far and although my unfamiliarity with how they do things caused some confusion on my part, they do have a good order processing and price guarantee in place.

Shipping time sucks ass...... I ordered on Monday and I was told it ships 24 business hours after order. The item shipped late 3 day and will not receive my item until Wendsday a week and two days later talk about snail mail!!!!!! N

Easy!

Nice website

The site does not inspired confidence due to the current look and feel. However the delivery was fast and the issue with ordering was resolved in matter of days. The only down side was that on of the parts did not match the original part of my vehicle. As

Thanks

best price

The Curt Class III Hitch Receiver installation on my vehicle was simple and easy. The hitch is of good quality. I would recommend this product. Autoplicity was prompt with the order process and delivery.

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