Gates T177 Engine Timing Belt

Gates T177 Timing Belt Overview

The Gates PowerGrip Premium OE Timing Belt T177 is an automotive timing belt built to OE exact standards for fit, function, and performance. It is a direct replacement for select Geo Storm and Isuzu Stylus applications, including interference-engine setups.

The PowerGrip Premium OE Timing Belt line focuses on OE-style replacement coverage for import and domestic vehicles, with materials and construction chosen to resist heat, wear, and contamination in everyday engine service.

Key Features

• Part number: T177
• PowerGrip Premium OE Timing Belt line
• OE Exact comparison rating
• Curvilinear (II) profile type
• Fiberglass cord reinforcement
• HCR belt material
• Black timing belt construction
• 112 cog design
• Pitch length: 35.275 in. / 896 mm
• Top width: 25 mm
• No timing marks

Detailed Description

Gates T177 is an engine timing belt for select 1990-1993 Geo Storm and 1991-1993 Isuzu Stylus models. It uses a curvilinear tooth profile, fiberglass cord, and HCR belt material to match OE-style timing system requirements. This timing belt is specified for interference-engine applications, where correct camshaft and crankshaft synchronization is critical.

As part of the Gates PowerGrip Premium OE Timing Belt line, this belt is engineered for broad aftermarket coverage while maintaining OE-level fit and performance expectations. If you are replacing a worn timing belt on a Geo Storm or Isuzu Stylus, the T177 provides the correct dimensions and construction for the listed applications.

This part cross-references Bando TB177 and Dayco 95177 for the same application.

What This Timing Belt Helps Address

• Engine timing noise caused by a worn or stretched belt
• Loss of camshaft/crankshaft synchronization
• Visible belt cracking, glazing, or tooth wear
• Timing service needs on interference-engine vehicles
• Replacement of an aging OE-style timing belt on Geo Storm and Isuzu Stylus models

Installation Notes and Tips

• Verify engine code and timing system layout before installation.
• Follow factory timing marks and service procedures for the vehicle.
• Inspect related timing components during service, including tensioners and pulleys.
• Because this belt has no timing marks, use the engine’s service reference points during setup.
• Confirm fitment for 1990-1993 Geo Storm and 1991-1993 Isuzu Stylus before ordering.

Quality Assurance

Gates is a global OE timing belt manufacturer with aftermarket coverage built around OE standards of fit, function, and performance. The T177 is part of that OE-focused product line and is built for the listed vehicle applications.