11-Present 6.7L Manton Series 3 3/8 Diameter .145 Wall Pushrods - D-304-145-6.7SF

These series 3 pushrods are a great upgrade over OEM for stock applications up to mild performance builds into the 400-750hp range.  Intended use in...
Vendor: Manton Pushrods
SKU: D-304-145-6.7SF
Availability: Many In Stock
Product Type: Valvetrain Parts
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Subtotal: $803.20
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Return Policy

Within 21 Days

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These series 3 pushrods are a great upgrade over OEM for stock applications up to mild performance builds into the 400-750hp range.  Intended use in towing, sportsman diesel, and factory performance engines.

For competition use application in high boost/high horsepower see the Series 5 pushrods.

Whether you are drag racing, towing, sled pulling, hammering on a dyno, or daily driver your rig, we can help you best choose the push rod that suits your needs.

Due to the length of the stock 6.7 pushrods at almost 10 inches, we here at Manton feel the OEM pushrods are not adequate for anything other than a stock vehicle. When the stress on the pushrod surpasses what is considered a reasonable window of operation, the OEM pushrod is not designed to support that additional load.


  • Manufactured out of 4130/4135 seamless Chromoly tubing
  • Series 3 3/8" x .145 x 9.560 overall length with 11/32 Cup 3/8 Ball w/oil
  • .145 wall thickness for ultimate strength
  • Provides approximately 170,000psi tensile strength
  • Standard billet steel tip ends (3 piece configuration for proper compatibility)
  • Tips are CNC machined from 86L20 bar stock, core hardened and triple tempered
  • Provides increased impact and wear resistance
  • Improves overall performance of your valve train
  • Set of 32 pushrods

If you have made any changes to the engine that requires custom length pushrods, Manton has pushrod length checking tools with proper ball radius’ to replicate the OEM pushrod. Correct pushrod length will allow you to keep stock rocker geometry and therefore ,allowing the friction pad of the rocker arm to correctly ride the contact area of the valve tip. If the pushrod length is not correct, it will cause the pre-load of the hydraulic unit to be incorrect, resulting in premature failure. Pushrods are an extremely important component in the valve train system that are often overlooked at the expense of performance and service life.


  • Each end must be compatible with its mating component. This requires the use of material that can function as a bearing and as impact resistant as possible. Additionally, this also allows for an unlimited amount of tip designs.
  • Modular pushrods allows the flexibility to choose “unique” tapers for clearance issues, while changing the wall thickness, diameter and tapering the tube will change the natural frequency.
  • The column of the pushrod must be made out of a different material and heat treated differently than the tips, and provide the strength to withstand the combined abuse of high engine speeds and cylinder pressure. By using a dissimilar material from the pushrod end we are able to utilize any heat treat desired. Most applications use 4130/4135 tubing. In our series 2 & 4 we use a MeloniteTM process for durability and wear resistance for guide plate use. The series 5 pushrods we use a proprietary heat treating process to increase the material value to a Rockwell of around 46 “C”. This is critical to the function of a pushrod column and 4130/4135 is very tough, forgiving and durable. Manton also offers a proprietary heat treated solid bar S-7 tool steel pushrod which is the same material used to produce quality chisels and hammers. It is very impact resistant and is the perfect material for extreme applications.
  • In our estimation the only reason to ever produce a one piece pushrod would be because of the reduced cost to manufacture. We are here to produce the highest quality pushrods available and for the reasons listed here we DO NOT manufacture one piece pushrods.
Brand: Manton PushrodsManufacturer Part Number: D-304-145-6.7SFLength (in): 12.0Width (in): 6.0Height (in): 2.0Weight (lbs): 8.0

Returns Policy

You may return most new, unopened items within 21 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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