1981 GMC P2500 Oil Pumps

Melling oil pump repair kits are provided to supply the parts needed to rebuild a specific individual oil pump. Melling kits include all the required parts needed for a quality oil pump rebuild. Although Melling recommends the installation of a new oil pump, Melling oil pump repair kits are the preferred choice when a rebuilder has the desire to reuse the original oil pump casting or front timing cover.

Made In USA. Several Melling oil pump applications require the use of an oil pump shaft guide. Melling provides high quality shaft guides for specific pump applications. An oil pump shaft guide is necessary to connect the oil pump drive shaft to the intermediate drive shaft. Melling recommends installing a new oil pump shaft guide when it is needed.

Fel-Pro® gaskets are specifically designed for the repair environment to deliver a reliable seal on even the most troublesome applications. Designed for imperfect sealing surfaces and manufactured with proprietary materials, you can count on Fel-Pro for innovative sealing solutions for the real-world repair environment.

Made in USA. Melling oil pumps provide dependable performance every time in every application. Every Melling oil pump is engineered and assembled to the highest production standards from high quality materials. All Melling oil pumps use the latest in gear and gerotor technology to provide the highest level of quality and performance. Gears are machined to close tolerances to ensure proper engine pressure and correct, efficient pump operation. End plates are precision ground for maximum wear resistance. Every Melling oil pump is individually tested for pressure and flow under conditions designed to duplicate actual engine operating conditions.

Made in USA. Melling high volume oil pumps increase the amount of oil flow by an average of 20% through the engine improving oil pressure at idle providing dependable performance every time in every application. Every Melling high volume oil pump is engineered and assembled to the highest production standards from high quality materials. All Melling high volume oil pumps use the latest in gear and gerotor technology to provide the highest level of quality and performance. High volume gears are machined to close tolerances to ensure proper engine pressure and correct, efficient pump operation. End plates are precision ground for maximum wear resistance. Every Melling oil pump is individually tested for pressure and flow under conditions designed to duplicate actual engine operating conditions.

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Made in USA. Melling high volume oil pumps increase the amount of oil flow by an average of 20% through the engine improving oil pressure at idle providing dependable performance every time in every application. Every Melling high volume oil pump is engineered and assembled to the highest production standards from high quality materials. All Melling high volume oil pumps use the latest in gear and gerotor technology to provide the highest level of quality and performance. High volume gears are machined to close tolerances to ensure proper engine pressure and correct, efficient pump operation. End plates are precision ground for maximum wear resistance. Every Melling oil pump is individually tested for pressure and flow under conditions designed to duplicate actual engine operating conditions.

Made in USA. Melling oil pumps provide dependable performance every time in every application. Every Melling oil pump is engineered and assembled to the highest production standards from high quality materials. All Melling oil pumps use the latest in gear and gerotor technology to provide the highest level of quality and performance. Gears are machined to close tolerances to ensure proper engine pressure and correct, efficient pump operation. End plates are precision ground for maximum wear resistance. Every Melling oil pump is individually tested for pressure and flow under conditions designed to duplicate actual engine operating conditions.

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

Melling high performance billet aluminum oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling billet aluminum oil pump series features a lightweight 6061-T6 aluminum housing and cover, a protective anodized hard coat, standard volume and high volume patented billet Shark Tooth gears, chrome moly steel drive shaft with extra shaft support, adjustable integrated oil pump screen, multiple pressure settings, CNC machining to exact tolerances and surface finishes, and supercharged inlet for improved performance. Includes additional pressure springs and stud kit. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance oil pumps are available for increased oil flow, increased oil pressure, anti-cavitation capability and overall higher performance when needed. The Melling High Performance Billet Aluminum series oil pumps are recommended for street, strip and racing applications.

Melling high performance billet aluminum oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling billet aluminum oil pump series features a lightweight 6061-T6 aluminum housing and cover, a protective anodized hard coat, standard volume and high volume patented billet Shark Tooth gears, chrome moly steel drive shaft with extra shaft support, adjustable integrated oil pump screen, multiple pressure settings, CNC machining to exact tolerances and surface finishes, and supercharged inlet for improved performance. Includes additional pressure springs and stud kit. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance oil pumps are available for increased oil flow, increased oil pressure, anti-cavitation capability and overall higher performance when needed. The Melling High Performance Billet Aluminum series oil pumps are recommended for street, strip and racing applications.

Melling high performance billet aluminum oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling billet aluminum oil pump series features a lightweight 6061-T6 aluminum housing and cover, a protective anodized hard coat, standard volume and high volume patented billet Shark Tooth gears, chrome moly steel drive shaft with extra shaft support, adjustable integrated oil pump screen, multiple pressure settings, CNC machining to exact tolerances and surface finishes, and supercharged inlet for improved performance. Includes additional pressure springs and stud kit. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance oil pumps are available for increased oil flow, increased oil pressure, anti-cavitation capability and overall higher performance when needed. The Melling High Performance Billet Aluminum series oil pumps are recommended for street, strip and racing applications.

Melling high performance billet aluminum oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling billet aluminum oil pump series features a lightweight 6061-T6 aluminum housing and cover, a protective anodized hard coat, standard volume and high volume patented billet Shark Tooth gears, chrome moly steel drive shaft with extra shaft support, adjustable integrated oil pump screen, multiple pressure settings, CNC machining to exact tolerances and surface finishes, and supercharged inlet for improved performance. Includes additional pressure springs and stud kit. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance oil pumps are available for increased oil flow, increased oil pressure, anti-cavitation capability and overall higher performance when needed. The Melling High Performance Billet Aluminum series oil pumps are recommended for street, strip and racing applications.

Melling high performance billet aluminum oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling billet aluminum oil pump series features a lightweight 6061-T6 aluminum housing and cover, a protective anodized hard coat, standard volume and high volume patented billet Shark Tooth gears, chrome moly steel drive shaft with extra shaft support, adjustable integrated oil pump screen, multiple pressure settings, CNC machining to exact tolerances and surface finishes, and supercharged inlet for improved performance. Includes additional pressure springs and stud kit. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance oil pumps are available for increased oil flow, increased oil pressure, anti-cavitation capability and overall higher performance when needed. The Melling High Performance Billet Aluminum series oil pumps are recommended for street, strip and racing applications.

Melling high performance billet aluminum oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling billet aluminum oil pump series features a lightweight 6061-T6 aluminum housing and cover, a protective anodized hard coat, standard volume and high volume patented billet Shark Tooth gears, chrome moly steel drive shaft with extra shaft support, adjustable integrated oil pump screen, multiple pressure settings, CNC machining to exact tolerances and surface finishes, and supercharged inlet for improved performance. Includes additional pressure springs and stud kit. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance oil pumps are available for increased oil flow, increased oil pressure, anti-cavitation capability and overall higher performance when needed. The Melling High Performance Billet Aluminum series oil pumps are recommended for street, strip and racing applications.

Melling high performance oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling high performance cast iron oil pump series features a doweled housing and cover, extended drive and idler shafts for additional support at increased RPM’s, a screw in relief spring plug, CNC machined cover and housing that is manganese phosphate coated, standard volume and high volume patented billet Shark Tooth gears, and a chrome moly drive shaft with steel guide. Includes lower pressure spring and self locking socket head bolts with wrench for use with bolt on screen pumps. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance Shark Tooth oil pumps are recommended for all applications where a high performance oil pump is needed.

Melling high performance oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling high performance cast iron oil pump series features a doweled housing and cover, extended drive and idler shafts for additional support at increased RPM’s, a screw in relief spring plug, CNC machined cover and housing that is manganese phosphate coated, standard volume and high volume patented billet Shark Tooth gears, and a chrome moly drive shaft with steel guide. Includes lower pressure spring and self locking socket head bolts with wrench for use with bolt on screen pumps. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance Shark Tooth oil pumps are recommended for all applications where a high performance oil pump is needed.

Melling high performance oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling high performance cast iron oil pump series features a doweled housing and cover, extended drive and idler shafts for additional support at increased RPM’s, a screw in relief spring plug, CNC machined cover and housing that is manganese phosphate coated, standard volume and high volume patented billet Shark Tooth gears, and a chrome moly drive shaft with steel guide. Includes lower pressure spring and self locking socket head bolts with wrench for use with bolt on screen pumps. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance Shark Tooth oil pumps are recommended for all applications where a high performance oil pump is needed.

Melling high performance oil pumps provide dependable performance every time in every application under the toughest RPM conditions. High volume performance upgrade for the M-99HV-S. The 10990 is a big block style oil pump made to fit the small block applications. The drive and idler shafts have been extended to allow for additional support in the cover. Additional support eliminates dynamic shaft deflection at increased RPM levels. The cover is doweled to the pump housing to assure alignment of the shaft bores. The relief valve has a screw-in plug instead of a pin. The housing and cover are CNC machined and phosphate coated. An additional spring, the original stock replacement is supplied which will reduce bypass pressure if needed. Includes 12550 chrome moly intermediate shaft with steel guide. Built with billet steel gears. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions.

Melling high performance oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling high performance cast iron oil pump series features a doweled housing and cover, extended drive and idler shafts for additional support at increased RPM’s, a screw in relief spring plug, CNC machined cover and housing that is manganese phosphate coated, standard volume and high volume patented billet Shark Tooth gears, and a chrome moly drive shaft with steel guide. Includes lower pressure spring and self locking socket head bolts with wrench for use with bolt on screen pumps. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions. Melling high performance Shark Tooth oil pumps are recommended for all applications where a high performance oil pump is needed.

Made In USA. A new Melling pick-up tube/oil screen assembly provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system. Contaminates enter your oil system via engine wear, extended time between oil changes and other internal engine sources. These contaminates can interfere with the proper oil flow and pressure spring functions resulting in engine damage and/or failure. Melling suggests that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation. Several Melling oil pump applications are offered with an oil screen included.

Sealed Power® parts provide innovative designs, use leading edge materials and utilize ISO & QS certified manufacturing in order to deliver top quality products that meet the rigorous demands of today’s modern engines.

A new Melling high performance pick-up tube/oil screen assembly provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system. Contaminates enter your oil system via engine wear, extended time between oil changes and other internal engine sources. These contaminates can interfere with the proper oil flow and pressure spring functions resulting in engine damage and/or failure. Melling suggests that a new properly installed high performance oil pump pick-up tube/screen be a part of every oil pump installation when a higher quality oil pump screen is required. Melling high performance oil pump pick-up tubes/screens are manufactured with stronger welds and in some cases designed with additional reinforced mountings, include mounting bolts and are supplied with protective coatings.

Made In USA. A new Melling pick-up tube/oil screen assembly provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system. Contaminates enter your oil system via engine wear, extended time between oil changes and other internal engine sources. These contaminates can interfere with the proper oil flow and pressure spring functions resulting in engine damage and/or failure. Melling suggests that a new properly installed oil pump pick-up tube/screen be a part of every oil pump installation. Several Melling oil pump applications are offered with an oil screen included.

A new Melling high performance pick-up tube/oil screen assembly provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system. Contaminates enter your oil system via engine wear, extended time between oil changes and other internal engine sources. These contaminates can interfere with the proper oil flow and pressure spring functions resulting in engine damage and/or failure. Melling suggests that a new properly installed high performance oil pump pick-up tube/screen be a part of every oil pump installation when a higher quality oil pump screen is required. Melling high performance oil pump pick-up tubes/screens are manufactured with stronger welds and in some cases designed with additional reinforced mountings, include mounting bolts and are supplied with protective coatings.

A new Melling high performance pick-up tube/oil screen assembly provides the lubrication oil as well as protection for your oil pump from materials that find their way into the engine oil supply system. Contaminates enter your oil system via engine wear, extended time between oil changes and other internal engine sources. These contaminates can interfere with the proper oil flow and pressure spring functions resulting in engine damage and/or failure. Melling suggests that a new properly installed high performance oil pump pick-up tube/screen be a part of every oil pump installation when a higher quality oil pump screen is required. Melling high performance oil pump pick-up tubes/screens are manufactured with stronger welds and in some cases designed with additional reinforced mountings, include mounting bolts and are supplied with protective coatings.