1985 Chevrolet Impala Engine Oil Pump Parts

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6 Cyl 3.8L 6 Cyl 4.3L 8 Cyl 5.0L 8 Cyl 5.7L

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1985 Chevrolet Impala Engine Oil Pump Melling

High Performance Oil Pump
25% Higher Volume High Performance Oil Pump 10 PSI Higher Pressure Relief Spring Installed Exclusive Billet Steel Shark Tooth Helical Pump Gears Drive & Idler Shafts Extended Into Cover Includes 12550 Chrome Moly Steel Intermediate Shaft With Steel Guide Threaded Pressure Relief Nut Includes Optional Pressure Springs (-10 PSI And +10 PSI) Uses 3/4 Inch Diameter Press-Fit Or Bolt-On Pickup Tube Assembly (Not Included) Includes Oil Pump Pickup Tube Gasket, Assembly Bolts, And Wrench
10555ST High Performance, High Volume, High Pressure, Billet Steel Oil Pump With Gasket
Performance
Product Attributes:
- Oil Pump Pressure Type: High Pressure
- Additional Volume Over Stock Percentage: 25%
- Adjustable Bypass Pressure: Yes
- Alternate Pressure Springs Included: Yes
- Grade Type: Performance
- Mounting Hole Diameter:
  - 0.240
  - 6.00
- Anti-Cavitation: No
- Manufactured For: Gm Sbc
- Screen Information: 3/4" Bolt On/press In
- Mounting Hole Quantity: 2
- Upgrade for Pump Number: N/a
- Additional Cover Shaft Support: Yes
- Gear Material: Billet Steel
- Oil Pump Volume Type: High Volume
- Manufactured Pressure: (pink) 70 Psi
- Optional Spring Pressure 1: (yellow) 58 Psi
- Gasket Or Seal Included: Yes
- Gear Type: Shark Tooth Helical Gear
- Optional Spring Pressure 2: (green) 80 Psi
- Drive Shaft Included: Yes
- Drive Type: Drive Shaft
- Pickup Tube Diameter:
  - 0.750
  - 19.00
- Oil Pump Type: Gear
Features:
- Extended drive and idler shaft for additional support in the cover eliminating dynamic shfaft deflection at increased RPM levels.
- Features billet steel "Shark Tooth" helical gears.
- Relief hole in cover uses screw in plug instead of pressed cup plug.
- Housing and Cover are CNC machined and phosphate coated.
- Includes +10PSI higher pressure relief spring and optional -10PSI relief spring.
- Screw in plug retains relief valve spring instead of pin.
- Cover is doweled to the pump housing to assure alignment of the shaft bores.
- Includes 12550 chrome moly intermediate shaft with steel guide.
Made in USA. 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.