Dayco PB1673N Engine Harmonic Balancer

Overview of Dayco Premium OEM Replacement Balancer PB1673N

The Dayco Premium OEM Replacement Balancer PB1673N is engineered for precise engine harmonic balancing in select Lexus models. Designed to maintain engine stability and reduce vibration, this balancer is compatible with Lexus GS400, GS430, LS400, LS430, and SC430 vehicles.

• Neutral counterweight balance with no counterweight
• Crank bore diameter of 1.379 inches (35.01 mm)
• Single integrated serpentine pulley with 6 grooves
• Cast iron outer ring for durability
• Overall outside diameter of 6.260 inches (159 mm)
• Overall width of 2.780 inches (70.6 mm)
• Includes timing marks for accurate installation

Detailed Product Description

The Dayco PB1673N engine harmonic balancer is a critical component designed to reduce torsional vibration in the crankshaft of Lexus GS400, GS430, LS400, LS430, and SC430 models. Featuring a neutral counterweight balance, this balancer does not include additional counterweights, ensuring smooth engine operation without added imbalance. The crank bore measures 1.379 inches (35.01 mm), fitting precisely on the crankshaft for secure mounting.

This balancer incorporates a single serpentine pulley with six grooves, measuring 5.709 inches (145 mm) in diameter, which drives accessory belts efficiently. The outer ring is constructed from cast iron, providing strength and resistance to wear. The overall outside diameter is 6.260 inches (159 mm), with a width of 2.780 inches (70.6 mm), dimensions that align with OEM specifications for proper fitment.

Timing marks are included on the balancer to assist with accurate engine timing during installation. Note that this part does not come with hardware or installation instructions, so professional installation is recommended.

About the Premium OEM Replacement Balancer Line

The Dayco Premium OEM Replacement Balancer product line focuses on delivering components that meet original equipment manufacturer standards. This ensures that the PB1673N balancer provides reliable performance and fitment comparable to factory-installed parts, making it suitable for maintenance and repair of Lexus engines requiring harmonic balancing.

Common Applications and Issues Addressed

• Reduces crankshaft vibration to prevent engine damage
• Restores proper accessory belt alignment and tension
• Eliminates engine noise caused by harmonic imbalance
• Prevents premature wear of engine components linked to vibration
• Supports accurate engine timing with integrated timing marks

Installation Notes and Tips

• Ensure crank bore dimensions match the engine crankshaft (1.379 inches)
• Use proper tools to avoid damage to the cast iron outer ring
• Verify timing marks alignment during installation for correct engine timing
• Hardware and installation instructions are not included; consult a professional mechanic if needed

Quality Assurance and Warranty

Dayco's Premium OEM Replacement Balancer PB1673N is manufactured to meet stringent quality standards consistent with OEM specifications. While specific warranty details are not provided, Dayco products typically undergo rigorous testing to ensure durability and performance in automotive applications.