M295HV High Volume LS Oil Pump Kit - High Flow Performance

In this review the M295HV High Volume LS Oil Pump Kit is evaluated for owners of GM Vortec V8 engines who need improved oil pressure and flow under demanding conditions. The bottom line is that this kit delivers a clear boost in lubrication capacity for 4.8L-6.2L applications, making it a sensible upgrade for rebuilds or engines running higher stress levels. It includes the pump, gaskets and a balancer bolt to simplify installation, and its best attribute is the increased oil volume that helps protect bearings and valvetrain components during heavy use.

Key Features

• High-capacity pump: Provides increased oil flow to improve lubrication and cooling for engines under sustained load.
• Broad compatibility: Fits many GM Vortec V8 engines from 4.8L to 6.2L, covering common models like Silverado, Sierra, Tahoe and Escalade.
• Complete kit: Ships with gaskets and a balancer bolt so the core parts needed for installation are included.
• Durable construction: Built to withstand higher duty cycles, reducing wear and helping maintain pressure in modified or high-mileage engines.
• OEM part references: Supplied with common part numbers such as M295HV, 12696357 and 12586665 for easier parts verification before purchase.

Who It's For

The M295HV kit is aimed at DIY mechanics, engine builders and owners of GM trucks and SUVs who need a higher volume oil pump to support aggressive driving, towing or mildly modified engines. It is a practical option when rebuilding an LS-series engine or replacing a worn factory pump to regain consistent oil pressure.

Those with strictly stock, low-mileage engines that never see heavy loads may not need the added capacity and could consider a direct OE replacement instead. Also, buyers should verify fitment against the listed part numbers and their specific model year before committing.

Pros & Cons

Pros

• Noticeable improvement in oil flow and pressure for heavy-duty or high-rev applications.
• Included gaskets and balancer bolt reduce the need to source extra parts during installation.
• Compatible with a wide range of GM Vortec V8 models, making it versatile for many projects.
• Customers report good quality and solid performance on 5.3L engines.

Cons

• Value feedback is mixed, so budget-conscious buyers should weigh cost versus benefit for their use case.
• Fitment requires checking OEM part numbers carefully to ensure correct application.

Specifications

Product	M295HV High Volume LS Oil Pump Kit
Compatible Engines	4.8L, 5.3L, 5.7L, 6.0L, 6.2L GM Vortec V8
Typical Vehicles	Chevrolet Silverado/Sierra, Tahoe, Suburban, Avalanche, Camaro, Corvette, GMC Yukon, Envoy
Included Components	Oil pump, gaskets, balancer bolt
OEM Part Numbers	M295HV, 12696357, 12586665, 224-43645, 601-2106
Brand	YzusGomumu

Our Verdict

The M295HV High Volume LS Oil Pump Kit is a practical upgrade for builders and owners who need improved lubrication under load; it pairs higher oil flow with a simple install kit and broad GM V8 compatibility. For those who tow, track or operate engines at higher stress, it represents solid value, though buyers should confirm part numbers to ensure fitment.

Frequently Asked Questions

Will this pump fit my 5.3L engine?
It is compatible with many 5.3L GM Vortec V8 engines, but always verify the listed OEM part numbers against your vehicle before purchase.

Does the kit include everything needed for install?
The kit includes the oil pump, gaskets and a balancer bolt, covering the primary parts for installation; additional seals or tools may be required depending on the vehicle.

Is this suitable for high-performance or towed vehicles?
Yes, the higher volume design is intended to improve lubrication and cooling under sustained loads, making it suitable for towing and performance applications.