Engines and Components› Crankshafts and Components

Jim Wolf

QR25DE Balance Shaft Removal Kit

$129.99

SKU: OQR25-NOBAL

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Overview

The Jim Wolf Technology Balance Shaft Removal kit is a must for high RPM performance on QR25DE engines. The factory balance shaft assembly spins at twice engine speed, creating an opposing inertial mass that can double the stress on main bearings at high RPMs. This kit allows for the removal of that assembly, increasing oil capacity by 1.5 quarts.
Show original supplier description
The Jim Wolf Technology Balance Shaft Removal Kit is designed for QR25DE engines to enhance high-RPM performance. The stock QR25DE engine features a balance shaft assembly that rotates at twice the engine speed to counteract inertial forces. While this reduces some vibration, it significantly increases stress on the main bearings, especially at elevated RPMs (over 14,000 RPM). This kit enables the removal of the factory balance shaft, which can also increase oil capacity by approximately 1.5 quarts. Installation of this kit is estimated to take around 2 hours and is performed entirely through the lower oil pan cover. The kit comes with complete instructions. This balance shaft removal kit is specifically designed for use with the QR25DE engine. It fits the Altima and Sentra models from 2002 and up, specifically the 2.5L versions. However, it explicitly does NOT fit the 2007 and later Sentra or Altima models.

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.

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Specifications

BrandJim Wolf
Part NumberOQR25-NOBAL
CategoryEngines and Components
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