HKS Adjustable Cam Gear (Slide Cam Pulley) | 4A-GE / 4A-GZE (1983-87 Corolla / 1984-89 MR2 / 1987-91 Corolla)

HKS Adjustable Slide Cam Pulley

For 1983–1987 Corolla AE86 4A-GE, 1984–1989 MR2 AW11 4A-GE / 4A-GZE, and 1987–1991 Corolla AE92 4A-GE / 4A-GZE applications

Overview

The HKS Adjustable Slide Cam Pulley allows precise camshaft timing adjustment on Toyota 4A-GE and 4A-GZE engines. Moving the cam timing forward or backward relative to the crankshaft allows the installed valve timing to be set for factory or aftermarket camshafts, engine machining changes, and performance tuning.

The pulley uses lightweight A2014 duralumin construction with a nickel-plated gear section for increased surface hardness and wear resistance. The center adjustment position corresponds to the factory cam-pulley phase, while the graduated scale allows repeatable advance or retard adjustments.

Key Features

• Adjustable camshaft timing for Toyota 4A-GE and 4A-GZE engines
• ±20° crank-angle adjustment range
• Approximately 2° of crank angle per graduation
• Center position corresponds to factory cam timing
• Suitable for intake or exhaust camshaft use on supported 16-valve applications
• Lightweight A2014 duralumin construction
• Nickel-plated gear section for increased surface hardness and wear resistance
• Suitable for use with standard or reinforced timing belts
• One pulley controls one camshaft

Vehicle Fitment

Toyota Corolla AE92

• 1987–1991 Toyota Sprinter Trueno – AE92 — 4A-GE / 4A-GZE
• 1989–1991 Toyota Corolla Levin – AE92 — 4A-GE / 4A-GZE

Toyota Corolla AE86

• 1983–1987 Toyota Corolla AE86 – 4A-GE

Toyota MR2 AW11

• 1984–1986 Toyota MR2 – MK1 – AW11 — 4A-GE
• 1986–1989 Toyota MR2 – MK1 – AW11 — 4A-GZE Supercharged

Fitment Notes

• Fits the intake and exhaust camshaft positions on supported 16-valve 4A-GE / 4A-GZE applications.
• Not compatible with the intake side of 5-valve / 20-valve 4A-GE applications.
• AE101 vehicle fitment is not included in the verified application range.
• Verify engine configuration before ordering for engine-swapped vehicles.
• Camshaft timing must be checked after installation to confirm valve-to-piston clearance and the intended valve timing.

Product Specifications

Brand: HKS
Product Type: Adjustable Cam Gear / Slide Cam Pulley
Engine: Toyota 4A-GE / 4A-GZE
Material: A2014 Duralumin
Gear Finish: Nickel Plated
Adjustment Range: ±20° Crank Angle
Graduation: Approximately 2° Crank Angle per Mark
Camshaft Position: Intake / Exhaust as Applicable
Timing Drive: Timing Belt
Valve Train: DOHC

Supporting Engine Components

These related engine components support the same engine family or a closely connected service area. HKS Fine Tune High-Performance Timing Belt | 4A-GE / 4A-GZE 16V — reinforced timing-belt option for supported 16-valve 4A-GE / 4A-GZE applications.

Available Configurations

Single Unit (1 Gear)

• (1) HKS Adjustable Slide Cam Pulley for one camshaft.

Complete Engine Set - Pair (2 Gears)

• (2) HKS Adjustable Slide Cam Pulleys for the intake and exhaust camshafts on a supported twin-cam application.