BCBC BT5591 Engine Timing Chain Tensioner - Primary

Engine Timing Chain Tensioner Overview

This Melling engine timing chain tensioner is a standard replacement part for select Nissan V6 applications. It uses a hydraulic design and steel housing to maintain timing chain tension in stock-style engine setups. Part number BT5591 is built for primary timing chain service on compatible Nissan Quest, Maxima, and Altima models.

Key Features

• Hydraulic tensioner design for consistent chain control
• Steel housing for durable engine bay service
• Adjustable construction for proper setup during installation
• Standard replacement grade for stock-style repairs
• Mounting bracket included for installation support

Detailed Description

Melling BT5591 is an engine timing chain tensioner made for primary timing chain applications in select Nissan vehicles. The hydraulic design helps maintain chain tension as engine conditions change, while the steel housing adds strength in a demanding valve train environment. This part number, BT5591, is listed for 2003-2009 Nissan Altima, 2004-2008 Nissan Maxima, and 2004-2009 Nissan Quest primary applications, including the 2003 Altima note for a plastic tensioner body.

The Stock product line focuses on broad application coverage for domestic and import vehicles, giving buyers a standard replacement option for routine timing service. For Nissan Altima, Nissan Maxima, and Nissan Quest timing chain repairs, BT5591 provides a direct-fit style solution for stock engine configurations.

What It Is Used For

• Restoring proper timing chain tension
• Addressing chain noise from worn tensioner components
• Replacing a hydraulic tensioner that no longer holds pressure
• Supporting accurate valve timing in stock engine service
• Repairing timing system wear during engine maintenance

Installation Notes and Tips

Verify engine code and timing system configuration before installation. This part is listed for primary position applications only, and the 2003 Nissan Altima fitment includes a plastic tensioner body note. Confirm the existing tensioner style and follow factory service procedures for timing chain alignment during replacement.

Quality Assurance

Melling states that its timing chain tensioners are manufactured with quality materials and workmanship for domestic and import applications. Part number BT5591 is a standard replacement option for timing service on compatible Nissan applications.