Dayco PB1174ST Engine Harmonic Balancer

Dayco Street Performance Balancer PB1174ST

The Dayco Street Performance Balancer PB1174ST is a harmonic balancer built for select Toyota and Lexus inline-six applications. It combines a neutral balance design with a cast iron outer ring, timing marks, and a single integrated serpentine pulley for street performance use.

Key Features

• Brand Line: Street Performance Balancer for performance-oriented street applications
• Neutral balance design with no counterweight
• Cast iron outer ring for durable crankshaft damping support
• Single integrated pulley with 6-groove serpentine configuration
• Timing marks included for engine setup and service reference
• Crank bore: 1.377 in. / 34.96 mm
• Nose outside diameter: 2.166 in. / 55.00 mm
• Overall outside diameter: 5.906 in. / 150.00 mm
• Overall width: 2.087 in. / 53.00 mm
• Bolt hole quantity: 2

Detailed Description

Dayco’s Street Performance Balancer line is aimed at engines that need a harmonic balancer with street-focused durability and accurate timing reference. The PB1174ST uses a neutral balance configuration, a cast iron outer ring, and a 6-groove serpentine pulley to match the needs of select Lexus GS300, Lexus IS300, Lexus SC300, and Toyota Supra applications. This Dayco PB1174ST harmonic balancer is a direct-fit style component for 1992-2005 Toyota and Lexus models listed below.

Compatible With: Fits 1993-2005 Lexus GS300, N/A; Fits 2001-2005 Lexus IS300, N/A; Fits 1992-2000 Lexus SC300, N/A; Fits 1993-1998 Toyota Supra, N/A.

What It Helps Address

• Crankshaft vibration control concerns from a worn or damaged balancer
• Timing mark visibility issues during ignition or engine service
• Belt drive alignment problems related to a deteriorated pulley surface
• Noise or imbalance symptoms caused by a failing harmonic balancer
• Fitment issues when replacing the original balancer on listed Lexus and Toyota engines

Installation Notes and Tips

Verify crank bore, nose diameter, pulley groove count, and timing mark orientation before installation. Hardware, installation instructions, crank trigger/exciter plate, and woodruff key are not included. Confirm the engine is set up for a neutral-balance balancer and inspect the crank snout and belt path for wear before assembly. For search relevance: Dayco PB1174ST is commonly selected for Lexus GS300, Lexus IS300, Lexus SC300, and Toyota Supra harmonic balancer replacement applications.

Quality Assurance

Dayco manufactures performance and replacement drivetrain components for engine accessory systems, and the Street Performance Balancer line is built around application-specific dimensions and timing reference features. This part cross-references no additional part numbers in the provided data.