Engines and Components› Oiling Systems

Melling

Oil Pump

$197.99

SKU: M00L 10355HV

In Stock
In Stock
Ships by Nov 7
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Melling 10355HV is a high-volume, high-pressure oil pump designed for GM Gen IV LS-based engines. It features an exclusive high-volume (+20%) rotor design and a hard coat anodized aluminum housing.

It includes a phosphate-coated cast iron cover and a standard pressure spring, with optional +10 PSI and +25 PSI high-pressure springs available separately. The 10355HV utilizes a threaded pressure relief nut and is compatible with stock bolt-on oil pickup tube assemblies.
Show original supplier description

Part #: 10355HV

Made in USA. Melling high performance oil pumps provide dependable performance every time in every application under the toughest RPM conditions. The Melling 10355 high performance oil pump is a standard volume upgrade of the M355. The 10355 features an anodized hard coated aluminum body and cast iron phosphate coated cover for improved pump performance and durability. Adjustable by pass pressure using optional spring. The relief valve has a pressure adjustable screw in plug instead of a cup plug. The oil pump and screen mounting seals are included. Every Melling high performance oil pump is individually tested for pressure and flow under actual engine operating conditions.

Features:

  • High volume performance upgrade for the M365HV.
  • 20% increase in volume over the M355, M365, and 10355.
  • Hard coat anodized body with a cast iron phoshate coated cover.
  • The relief valve features a screw in valve plug.
  • Includes optional +20 psi pressure relief spring.
  • Uses standard 7/8" diameter bolt on screen.
  • Cast Aluminum Housing
  • Steel Rotors
  • Includes O-Ring For Screen Installation

10355HV High Performance, High Volume, High Pressure, Anodized Hardcoat Oil Pump With Gasket

Vehicle Symptoms
  • Low oil pressure at idle or hot
  • Engine ticking or knocking from top end
  • Oil pressure light flickering or staying on
  • Rough running after cam or head swap
  • Oil starvation under hard acceleration
Relevant Conversations
  • LS engine low oil pressure at hot idle
  • Melling 10355HV vs 10295 oil pump
  • Gen IV LS oil pump upgrade for cam swap
  • LS low oil pressure code P0520 but pump is fine
  • Best high volume oil pump for 6.0L LS
  • LS oil pump install tips and torque specs
  • LS engine knocking after oil change
  • LS oil pressure sensor P0521 replacement
  • Melling 10355HV high volume oil pump review
  • LS oil pump priming procedure

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandMelling
Part NumberM00L 10355HV

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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