My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

COMP Cams 4013 Rocker Arm Stud Girdle for Ford 289 302 351W 3/8 Inch Stud

(Ford F-150 1975-95, F-250 1975-95, Bronco 1966-93, F-350 1975-80, 1987-95, F-100 1975-83, F-250 Pickup 1972-95, Ranchero 1963-79 + 15 more models)

Part of: COMP Cams Rocker Arm Stud Girdle

Other options in this family: COMP Cams 4004 COMP Cams 4009

Manufacturer

Picture for manufacturer COMP Cams

Part Number

4013
12 reviews
Sale Price

$304.95

In Stock (7)

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The COMP Cams 4013 Rocker Arm Stud Girdle is a precision-engineered valve train stabilization component designed for Ford small block engines. This girdle is specifically manufactured to fit 289, 302, and 351W engines equipped with 3/8-inch rocker arm studs.

Key Features:

  • Reduces rocker arm stud flex and valve train deflection at high RPM
  • Increases valve train stability for improved performance and reliability
  • Designed for 3/8-inch diameter rocker arm studs
  • Direct fit for Ford 289, 302, and 351W small block V8 engines
  • High-quality construction for long-lasting durability
  • Helps maintain consistent valve lash and geometry under load

This stud girdle is an essential upgrade for performance engines running high valve spring pressures or elevated RPM ranges. By connecting the rocker arm studs together, the girdle distributes stress more evenly across the valve train system, preventing individual stud failure and maintaining precise valve control. Ideal for street performance, racing, and high-output engine builds where valve train stability is critical.

Products specifications

Fits

Ford F-150 1975-95, F-250 1975-95, Bronco 1966-93, F-350 1975-80, 1987-95, F-100 1975-83, F-250 Pickup 1972-95, Ranchero 1963-79, F-350 Pickup 1972-80, 1987-95, E-350 Econoline 1975-82, 1987-95, E-150 Econoline 1975-95 + 12 more models

Prop 65

WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov

C.A.R.B. Exempt for Foreign Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for On-Road Vehicles?

Yes

C.A.R.B. Exempt for Racing and Off-Road Only Vehicles?

Yes, but must be a race/competition only vehicle.

C.A.R.B. Exemption Reason

No impact on pollution output of vehicle.

C.A.R.B. Exempt for California Certified Vehicles Manufactured Before 1965?

Yes, but must meet tailpipe emission standards for year of vehicle.

C.A.R.B. Exempt for Federally Certified Vehicles Manufactured Before 1967?

Yes, but must meet tailpipe emission standards for year of vehicle.

Material

6061-T6 Aluminum

Engine Family

Ford 289, 302, 351W

Stud Diameter

3/8

Very easy to buy and great price.

I like the transparency when ordering from Autoplicity. Not only is the ordering process easy, time from order-to-delivery prompt, but I can see how much the shipping costs will be when ordering. That is of the utmost importance to me.

Aaaa++++

Extremely fast shipping and delivery! I received my item within 24 hours of ordering.

Fast service and the best price on j e sportsman racing product pistons.

i just received the part an hour ago. I do not know yet but looks good. Thank you

very good I hope this product works as advertised looks like a good dye

Ordered a sling to store my roof rack. There was an issue with the supplier which was quickly resolved by the Autoplicity staff. Great customer service -- most responsive I've ever seen.<br><br>Best prices around.

Super easy to browse web site and find the product I wanted.<br>The price was unmatched.<br>Shipping was fast and cheap.<br>Super shopping experience.

Great price and quality is very good . Easy to install

Great prices, helpful customer service. Ordered 2 by mistake. And they got it cleared up real fast. Saved over $80 off retail. Will be ordering from the, again!!!!! <br>

Rather amazing and uneventful service in this day and age. Ordered a Thule bike rack for my Nissan Murano. It was in stock (unusual for high-end specialty products), shipped the next day, and was on my doorstep in a few days (excellent for a 60 lb. large box). I'd buy anything from these people without any reservation. AND, your order is insured - completely superfluous. Oh, and did I mention, the lowest price I could find ANYWHERE, and not by a few dollars - a lot.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy