Since 1921, Cloyes has been the trusted leader in automotive timing systems. As a critical component of the engine's timing system, the crankshaft sprockets work in unison with the timing chain, tensioners, guides and other sprockets, to ensure precise timing. Cloyes engine timing crankshaft sprockets are precision-tooled with exact tooth geometry and a perfectly matched bore, off-set and timing index for superior fit, reliability, and long-term performance. To ensure total timing system integrity, Cloyes recommends replacing the chain along with the tensioners, guides, and sprockets during service. Trusted by professionals for over a century & backed by an industry-leading warranty and technical support.
  • Features precision-tooled tooth form, bore, off-set and timing index for superior fit, reliability, and long-term performance in engine timing repairs
  • CAD designed and manufactured using premium materials and heat-treated for OE-level fit and function, allowing for smooth installation and reliable performance
  • Each part is extensively tested for function, fitment, and durability to ensure consistent quality and optimal performance, reducing the risk of comebacks
  • Available in application-specific kit or as a stand-alone product, offering installation flexibility and convenience
  • Backed by Limited Lifetime Warranty and over 100 years in engineering leadership with unmatched technical support and repair confidence in every component

Application Summary:

Year Make/Model
1988-1990 Buick Electra
1988-1994 Buick LeSabre
1991-1994 Buick Park Avenue
1988-1991 Buick Reatta
1990-1994 Buick Regal
1988-1993 Buick Riviera
1992-1994 Chevrolet Lumina APV
1992-1994 Oldsmobile 88
1988-1994 Oldsmobile 98
1988-1991 Oldsmobile Delta 88
1992-1994 Oldsmobile Silhouette
1988-1992 Oldsmobile Toronado
1988-1994 Pontiac Bonneville
1992-1994 Pontiac Trans Sport

This item is a component of the following packages: C-3070, C-3071

Attributes
ASIN B000C0AKF8
Adjustable No
Category Camshafts and Valvetrain
Chain Row Quantity 1
Color Gray
Country of Origin (Primary) US
Emission Code Legal US
GTIN 00750385105240
Harmonized Tariff Code (Schedule B) 8483901000
Hazardous Material Code N
Inside Diameter 35.052
Keyway Notch Yes
Life Cycle Status Code Available to Order
Material Metal
Meets or Exceeds Original Equipment Manufacture Specifications Yes
Mount Hole Diameter 1.38", 1.38"
Mount Hole Quantity 1
Mounting Hole Diameter (uom:in) 1.38
Mounting Hole Diameter (uom:mm) 35.052
Mounting Hole Quantity 1
Original Equipment Replacement Yes
Outside Diameter 2.37
SDR Required Flag N
Series Engine Timing Crankshaft Gears
Subcategory Timing Gears
Thickness 1.47"
Thrust Bearing Included N/A
Timing Mark Quantity 1
Tooth Quantity 20
Tooth Width 0.23", 0.23"
Tooth Width (in) 0.23"
Tooth Width (uom:in) 0.23
Tooth Width (uom:mm) 5.842
Universal Or Specific Fit Specific
Width (uom:in) 1.47
Width (uom:mm) 37.338

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Cloyes S729 Engine Timing Crankshaft Sprocket

Product Information

  • Brand: Cloyes
  • Product Number: S729

This item is a component of the following packages: C-3070, C-3071

Vehicle Fitment