Genuine Mazda Lower Gear Lever Change Bush / Shifter Bushing • R503-17-492

Genuine Mazda R503-17-492 Lower Gear Lever Change Bush / Shifter Bushing

Replacement Genuine Mazda gear lever change bush for Mazda MX-5 Mk2, Mk2.5, Mk3, Mk3.5, Mk3.75 and Mk4 manual-transmission models from 1998 onwards, together with selected Mazda RX-7 and RX-8 manual-transmission applications listed in the compatibility table.

This bush fits to the lower section of the gear lever within the manual-transmission change-control assembly. It supports and locates the lower gear-lever ball, allowing the lever to move smoothly while maintaining the correct engagement with the gearbox selector mechanism.

The bush is positioned at the base of the gear lever, beneath the centre console and surrounding gear-lever boots. There is typically one bush fitted per vehicle. This listing is for one Genuine Mazda change bush.

Wear, splitting or distortion of the bush can contribute to excessive gear-lever movement, a loose or imprecise shift, increased vibration, rattling or difficulty selecting gears cleanly. It is commonly replaced when rebuilding the gear-lever assembly or addressing a worn shift feel.

• Part type: Lower gear lever change bush / shifter ball bushing
• Primary use: Supports and locates the lower gear lever within the manual-transmission change-control assembly
• Location: Base of the gear lever beneath the centre console
• Position: Lower gear-lever ball / selector interface
• Quantity per vehicle: 1
• Quantity supplied: 1 change bush
• Brand: Genuine Mazda
• Part No.: R503-17-492
• Also referenced as: R50317492
• Fitment note: For confirmed manual-transmission applications only; not suitable for automatic-transmission models

Fitment advice: This bush is used within the manual-transmission gear-change assembly on the confirmed applications. Gear-lever designs and surrounding components vary between generations, so the original boots, washers, insulators and retainers should be installed in their correct order. For imported, modified or previously repaired cars, matching the original component style and part number is recommended.

Other items to consider: When changing this part, you may also want to consider purchasing the upper and lower gear-lever boots, insulating bushes, wave washer, retaining ring, selector turret seals and any other worn components within the gear-change assembly.

Useful tools / consumables: Plastic trim-removal tools, socket set, screwdrivers, circlip pliers where applicable, torque wrench, cleaning cloths and suitable transmission assembly grease.

Difficulty guide: DIY Difficulty: Moderate. Access normally requires removal of the gear knob, centre-console trim, gear-lever boots and gear-lever assembly. Careful cleaning, lubrication and correct reassembly of the components are important for smooth gear selection.

Why Genuine Mazda? Genuine Mazda transmission components are designed to match the original gear-change mechanism, component dimensions and gearbox selector arrangement. Correct material specification and tolerances help maintain accurate gear-lever location, smooth shift operation and compatibility with the surrounding change-control components.

What’s in the box: One Genuine Mazda lower gear lever change bush, part number R503-17-492.

Installation notes: Remove the centre-console trim and gear-lever assembly following the appropriate Mazda workshop procedure. Note the order and orientation of the boots, washers, insulators and retaining components before disassembly. Clean the lower gear-lever ball and selector area, apply the specified lubricant and fit the new bush securely before reassembly. Check that all gears engage smoothly before refitting the centre console.