Manton Tool Steel Roller Rocker Arm Assembly 01-23 GM Duramax
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- Ships from Manton Pushrods
Are you ready for the strongest and smoothest operating roller rocker arms for your Duramax? Manton offers up this complete kit that will surpass your expectations and allow you to properly build your engine for extreme power and reliability.
With more racers hitting the tracks every weekend and power levels continuing to rise, Manton felt it was necessary for an aggressively designed roller rockerarm system. Changes have been made in several areas to improve overall performance of the valvetrain and help increase service life.
With minimization of deflection being the main concern, they incorporated one of their proprietary tool steels into the rockerarm bodies. Further, they use a multi-stage heat treatment process to core harden the bodies. Then, the bodies are nickel plated to prevent any contamination. To aid in lashing the valves a simpler process, they have broached the adjusting screws to accept an allen wrench, instead of the slot for a flat head screwdriver. Manton's Top Fuel proven pin and roller combination on the valve side are integrated, which reduces side thrust on the valve by removing the scrubber from the rockerarm. Going away from the shoe style rockerarm required a conversion of the geometry theory, allowing them to keep the factory rockerarm ratios and utilize the existing camshaft.
During the development stage of this rockerarm, it was determined that the aluminum head could use a girdle to help strengthen the head against deflection caused by cylinder pressure. Thus, Manton incorporated a heat treated 0.250 wall chromoly rockerarm shaft, to provide the needed support. While aiding the cylinder head, it also features full time oiling grooves. This groove prevents the rockerarm from shutting the oil pressure off to the pushrod as it starts to open the valve, like with an OEM style shaft. As with all heavy wall shafts from Manton, they've used a threaded shaft plug on each end, to prevent any worn or poorly fitting press plugs from compromising the seal.
Furthermore, Manton includes higher grade ARP twelve point bolts with washers for a secure fit. To match these bolts, you'll also get 12 point ARP poly-lock jam nuts to keep everything secure. Overall, you'll gain a massive upgrade in dependability to the powertrain as a whole.
Are you ready for the strongest and smoothest operating roller rocker arms for your Duramax? Manton offers up this complete kit that will surpass your expectations and allow you to properly build your engine for extreme power and reliability.
With more racers hitting the tracks every weekend and power levels continuing to rise, Manton felt it was necessary for an aggressively designed roller rockerarm system. Changes have been made in several areas to improve overall performance of the valvetrain and help increase service life.
With minimization of deflection being the main concern, they incorporated one of their proprietary tool steels into the rockerarm bodies. Further, they use a multi-stage heat treatment process to core harden the bodies. Then, the bodies are nickel plated to prevent any contamination. To aid in lashing the valves a simpler process, they have broached the adjusting screws to accept an allen wrench, instead of the slot for a flat head screwdriver. Manton's Top Fuel proven pin and roller combination on the valve side are integrated, which reduces side thrust on the valve by removing the scrubber from the rockerarm. Going away from the shoe style rockerarm required a conversion of the geometry theory, allowing them to keep the factory rockerarm ratios and utilize the existing camshaft.
During the development stage of this rockerarm, it was determined that the aluminum head could use a girdle to help strengthen the head against deflection caused by cylinder pressure. Thus, Manton incorporated a heat treated 0.250 wall chromoly rockerarm shaft, to provide the needed support. While aiding the cylinder head, it also features full time oiling grooves. This groove prevents the rockerarm from shutting the oil pressure off to the pushrod as it starts to open the valve, like with an OEM style shaft. As with all heavy wall shafts from Manton, they've used a threaded shaft plug on each end, to prevent any worn or poorly fitting press plugs from compromising the seal.
Furthermore, Manton includes higher grade ARP twelve point bolts with washers for a secure fit. To match these bolts, you'll also get 12 point ARP poly-lock jam nuts to keep everything secure. Overall, you'll gain a massive upgrade in dependability to the powertrain as a whole.
Diesel Power Products directs warranty claims to the respective manufacturer; coverage and duration depend on that manufacturer and product. Its one-year manufacturer-defect warranty applies only to products manufactured by Power Products Unlimited Inc., not all products it sells. Manufacturer inspection is required; DPP does not pay inspection/return shipping or labor.
Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Diesel Power Products warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Professional installation is recommended.
- Return eligibility
- Diesel Power Products states a 30-day window from receipt for eligible new, uninstalled, unopened and complete items in original packaging, with prior approval/RMA. Custom tuners and specified opened tools are excluded. Customer pays return shipping; original outbound shipping, including initially free shipping, is deducted. No standard restocking percentage is stated for ordinary approved returns. Based on what Diesel Power Products offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- Diesel Power Products
- Warranty duration
- Product-specific duration not stated; see supplier terms
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–7 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- Diesel Power Products
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.