Manton 12v Cummins Pushrods Series 3
Upgrade your 12V Cummins engine with stronger pushrods for enhanced performance and durability. Stock 3/8 diameter pushrods, nearly 11 inches long, lack sufficient strength beyond stock use. OEM pushrods can’t handle excessive stress from increased valve train loads. Choose from our 3/8 and 7/16 diameter 3-piece pushrods for improved column strength and stability.
Crafted from 4130/4135 seamless Chromoly tubing, our pushrods offer various heat-treating options and come standard with billet steel tip ends. CNC machined from 86L20 bar stock, the tips are core hardened and triple tempered for durability, enhancing overall valve train performance. Our engineering versatility ensures compatibility with your specific engine combination.
We engineer pushrods to fit the largest possible diameter without causing binding with cylinder head ports. The 7/16 diameter tubing provides nearly double the loading capacity before deflection, making it ideal for Cummins engines. Opt for our Series 5 pushrods in competition engines for improved strength and performance.
Series 5 pushrods offer 105,000 p.s.i. additional tensile strength over Series 3, enhancing valve timing accuracy and reducing surging. Proven durable in top fuel, sprint cars, and marine champions year after year. For custom engine modifications, use our pushrod length checking tools to maintain stock rocker geometry and ensure optimal valve tip contact.
Contact us at (951) 245-6565 for assistance.
Inform us if you’ve switched to aftermarket tappets needing hybrid Cummins pushrods with a different tappet end.
Series 1 (Up to 250 HP)
Application: Small engines with low valve spring pressure, i.e. carts to Volkswagen
Specs: 140,000 psi tensile strength (4130/4135 chromoly).
Notes: Not recommended for hardened guide plates or roller cams.
Series 2 (Guide Plate Compatible)
Application: Factory Performance Upgrade CNC turned, surface heat treated 1 piece pushrods.
Specs: ~170,000 psi tensile strength (aerospace-grade hard-drawn seamless 4130/4135 chromoly).
Notes: Compatible with guide plates or shaft mount setups.
Series 3
Application: Low to medium spring pressure including flat tappet and hydraulic roller engines
Specs: 170,000 psi tensile strength (aerospace-grade hard-drawn seamless 4130/4135 chromoly).
Notes: Requires shaft or pedestal style rocker arms (not for guide plate use).
Series 4 (Guide Plate Compatible)
Application: Pushrods are engineered for mid- to high-performance engines. Requires matched-size pushrod guide plates to maintain proper valvetrain alignment.
Specs: ~180,000 psi tensile strength (aerospace-grade hard-drawn seamless 4130/4135 chromoly).
Notes: Melonite™ processed for superior wear resistance and durability.
Series 5
Application: High Performance solid roller applications & hydraulic roller setups with power adders / extreme RPM demands.
Power Adders: Blown, Turbo charged, Pro charged, Alcohol and Nitrous.
Specs: 275,000 psi tensile strength via proprietary heat-treated 4130/4135 chromoly.
Notes: Hand-crafted with custom tip options; requires shaft or pedestal rockers.