Standard Ignition VVT678 Engine Variable Valve Timing (VVT) Sprocket - Exhaust (Left)

Engine VVT Sprocket for Toyota 86

Standard Ignition VVT678 is an engine variable valve timing sprocket built for the exhaust side of select Toyota 86 applications. It is a metal crankshaft gear with a keyed notch, five timing marks, and a 38-tooth design for accurate timing service on the 2017-2018 Toyota 86, exhaust (left).

Key Features

• Engine variable valve timing sprocket for timing system service
• Fits 2017-2018 Toyota 86, exhaust (left)
• Metal gear construction for durability in engine applications
• Crankshaft gear type with one mounting hole and one gear row
• 38 teeth with five timing marks for alignment during installation
• Keyway notch included for proper indexing
• Standard Ignition VVT678 cross-references OE-style applications

Detailed Description

Standard Ignition VVT678 is a replacement VVT sprocket for the exhaust side of the Toyota 86. This part number is built with a metal gear and precise timing features, including five timing marks, a 38-tooth profile, and a keyway notch to support correct cam timing during service. It measures 3.69 inches outside diameter, 1.77 inches inside diameter, and 0.16 inch thick, making it a direct-fit timing component for the specified application. This part cross-references Standard Ignition VVT678 and one OE-style reference, SU00306452, for the same application.

Common Problems This Part Can Address

• Worn or damaged variable valve timing sprocket
• Timing mark misalignment during engine repair
• Noise or irregular operation from a failing timing component
• Cam timing service on the exhaust side of the Toyota 86
• Replacement of a metal timing gear with visible wear

Installation Notes and Tips

Verify engine position and timing marks before removal. Match the keyway notch and timing marks exactly during installation, and confirm the sprocket is seated correctly on the exhaust (left) side of the engine. Because hardware is not included, reuse or source any required fasteners separately as specified by the service procedure. Always follow the factory repair manual for torque values and timing verification after installation.

Quality Assurance

Standard Ignition supplies engine management and timing components for service replacement applications. VVT678 is built to match the listed fitment for 2017-2018 Toyota 86 exhaust (left) service and is identified by part number VVT678 for ordering and catalog lookup.