Performance Drive Belt Tensioner Kit for Acura TSX (2004-2006) 2.4L

Heavy-Duty Drive Belt Tensioner Kit for 2004-2006 Acura TSX (CL9)

What it Does: The Performance Drive Belt Tensioner Kit restores calibrated accessory drive tension on the 2004-2006 Acura TSX to eliminate belt slip, pulley bearing chatter, and parasitic load loss across the rev range.

The Stock Acura TSX Tensioner Weakness

Factory belt tensioners on the CL9 chassis rely on an internal spring and dampening mechanism that progressively fatigues under sustained thermal cycles and high-RPM operation. On the high-revving K24A2, this mechanical fatigue introduces excessive belt deflection and harmonic vibration. As the factory damping degrades, the serpentine belt loses uniform grip against the alternator, water pump, and A/C compressor pulleys. This yields belt slip during rapid throttle transitions, premature failure of internal pulley bearings, accelerated rib wear, and audible squeal under electrical or mechanical accessory load.

The Engineering Solution

This replacement kit resolves accessory drive instability by utilizing a reinforced cast-aluminum tensioner housing paired with a fatigue-resistant internal spring calibrated to withstand aggressive engine speeds. The assembly integrates a precision-machined idler pulley running a high-grade, sealed double-row ball bearing to handle radial loads and prevent thermal seizure. Included is a multi-rib 7PK1755 synthetic EPDM serpentine belt engineered for high tensile strength, resistance to heat cracking, and optimal friction contact to maintain synchronized accessory rotation up to the 7,100 RPM redline.

What's Included

• 1 Serpentine Belt (7PK1755)
• 1 Tensioner Assembly

Technical Specifications

Compatibility

• 2004 Acura TSX Base 2.4L L4 Gas (K24A2)
• 2005 Acura TSX Base 2.4L L4 Gas (K24A2)
• 2006 Acura TSX Base 2.4L L4 Gas (K24A2)

Frequently Asked Questions & Fitment Warnings

Does this fit the CL9 TSX?

Yes, this is a direct fit for the 2004-2006 Acura TSX equipped with the K24A2 engine.

Do I need a special tool to relieve tension during installation?

Installation requires a standard serpentine belt tool or long-handled box wrench on the tensioner cast lug to compress the internal spring and route the belt.

The Acura Caliber

The high-compression VTEC valvetrain on the K24A2 demands rock-solid accessory drive stability; this kit provides the mechanical reliability required to maintain uninterrupted accessory output throughout aggressive driving.