High Volume Pump; Small Block Style Oil Pump
5/8in Screen Inlet
Must Use IS-55E Oil Pump Intermediate Shaft With Steel Guide
Stock 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. Brand: Melling Condition: New
This part is backed by our industry-leading lifetime warranty. Shop with total confidence.
100%money-back120-dayreturnsOE-gradequality
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Specifications & Info
Attribute
Value
Additional Volume Over Stock Percentage
25%
Drive Type
Drive Shaft
Gasket Or Seal Included
No
Grade Type
Improved Design
Mounting Hole Diameter
0.25, 6.0
Mounting Hole Quantity
2
Oil Pump Pressure Type
Standard Pressure
Oil Pump Type
Gear
Oil Pump Volume Type
High Volume
Vehicle Fitment Guide
This part fits the following vehicles:
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GMC1 model(tapclick to expand)(tapclick to hide)
Syclone1991(tapclick to expand)(tapclick to hide)
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SubmodelSUB- MODEL
Body Style
Years
Engine
Attributes
Base
Standard Cab Pickup
1991
V6 4.3L Turbo
AWD Automatic
Years
Make
Model
Submodel
Body Style
Engine
Attributes
1991
GMC
Syclone
Base
Standard Cab Pickup
V6 4.3L Turbo
AWD Automatic
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.
Policies
Shipping Information
We offer fast, reliable shipping on all orders:
Ships to all countries via US Postal Service Priority Mail.
Most orders ship within 1 business day.
Delivery time: 1-4 business days after shipment.
International shipping available, including APO/FPO addresses.
Tracking information provided for all shipments.
Additional handling fees may apply for oversized/overweight packages.
Return Policy
We want you to be 100% satisfied with your purchase. That's why we offer:
120-Day Returns - Return any part within 120 days from date of receipt.
Must obtain RMA (Return Merchandise Authorization) number before returning.
Parts must be in original condition, uninstalled, unaltered, and in original packaging.
Important: Electrical parts are not returnable if unsealed.
Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
Refunds processed after warehouse receives return and credited to original payment method.
Warranty
This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.
Warranty does NOT cover:
Shipping costs or labor expenses.
Installation errors.
Parts used for racing.
Commercial vehicle parts.
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.
Interchange Parts
Brand
Part Number
DNJ
OP3125HV
Melling
M-55HV
Fits Years: 1991
Fits Models: Syclone
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120
Day Return Window
4× the Industry Standard
Most retailers stop at 30 days. We give you a full four months to install, test, and return for a 100% refund — return shipping on us.
NEW
Direct-Fit Replacement
Engineered To OEM Specs
Brand-new aftermarket parts from trusted suppliers — built to original-equipment specifications so they fit and function like the factory unit, at a fraction of the price.