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ARP 154-5203 Main Bolt Kit For Small Block Ford - 351w

(Ford F-150 1977-93, Mustang 1969-73, Bronco 1978-93, Galaxie 500 1969-74, F-250 Pickup 1977-93, Fairlane 1969-70, Ranchero 1969-79 + 17 more models)

Part of: ARP Main Bolt Kit For Small Block Ford

Other options in this family: ARP 154-5004

Manufacturer

Picture for manufacturer ARP

Part Number

154-5203
7 reviews
Sale Price

$100.57

2 left at this price

delivery box

Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The ARP 154-5203 is a high-performance main bolt kit engineered specifically for Small Block Ford 351 Windsor engines with 4-bolt main caps. These premium fasteners provide superior clamping force and reliability compared to OEM hardware, making them essential for performance and racing applications.

Key Features:

  • Forged from 8740 chrome moly steel for exceptional strength and durability
  • Heat-treated to 180,000 psi tensile strength (High Performance Series)
  • Precision J-form threads rolled after heat treatment for 1000% greater fatigue life than conventional bolts
  • Generous under-head radius design reduces stress concentrations
  • Includes hardened, parallel-ground washers for even load distribution
  • Prevents main cap walk and fretting under high loads
  • Protects engine block threads from damage during installation and removal

ARP main bolts are the preferred choice of professional engine builders for competition engines. The post heat-treat thread rolling process creates fasteners with significantly longer service life than bolts threaded before heat treatment. Each kit is manufactured to exacting tolerances and designed to meet the demanding requirements of high-performance and racing applications.

Products specifications

Fits

Ford F-150 1977-93, Mustang 1969-73, Bronco 1978-93, Galaxie 500 1969-74, F-250 Pickup 1977-93, Fairlane 1969-70, Ranchero 1969-79, Torino 1969-76, Falcon 1970, F-350 Pickup 1977-93, E-350 Econoline 1975-93, Gran Torino 1972-76 + 12 more models

Fastener Style

Bolt

Fastener Yield Strength (psi)

180,000 psi

Head Style

Hex

Main Bolt Style

4-bolt

Notes

Fits SVO 351 4 bolt main with 7/16 in. outer bolts only.

Nuts Included

No

Quantity

Sold as a kit.

Washers Included

Yes

Works with Windage Tray

No

i ordered a VP 5 gallon container,<br>order: 28683<br><br>the process was easy,<br>they delivered exactly as promised, when they said they would <br><br>A+<br><br>Shipping was a little high

Easy to order. Ask me again after I receive item.

Autoplicity is awesome! Easy check out and quick shipping! Will buy from again!

Everything went smoothly

Great price and super fast shipping!!<br>Will be back!!!

Great store! Best prices, fast fedex shipping. Very satisfied, will buy from Autoplicity again!

Good site easy to search for and find parts. The lowest prices on almost every part I have been able to find for my truck.

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