Genuine Mazda Clutch Pilot / Spigot Bearing • YF09-11-303

Genuine Mazda Clutch Pilot / Spigot Bearing

Replacement Genuine Mazda clutch pilot bearing for applicable manual-transmission Mazda MX-5 Mk3, Mk3.5 and Mk3.75 NC and Mk4 ND/RF models.

The pilot bearing, also commonly called the spigot bearing, is installed at the centre of the crankshaft or flywheel assembly and supports the nose of the manual-gearbox input shaft.

When the clutch pedal is pressed and the clutch disc is released from the flywheel, the engine and gearbox input shaft can rotate at different speeds. The pilot bearing supports the input shaft during this relative movement and helps maintain its alignment with the crankshaft and clutch assembly.

One bearing is fitted per applicable manual-transmission vehicle. This listing supplies one Genuine Mazda pilot bearing.

Transmission restriction: This component is used with applicable manual gearboxes. Automatic-transmission vehicles do not use a conventional clutch pilot bearing in this application.

• Part type: Clutch pilot bearing
• Common names: Spigot bearing / crankshaft pilot bearing / gearbox input-shaft bearing
• Mazda catalogue description: Bearing, Pilot
• System: Clutch and manual transmission
• Installation area: Centre of crankshaft / flywheel assembly
• Function: Supports and centres the manual-gearbox input shaft
• Transmission application: Manual transmission only
• Quantity fitted per vehicle: 1
• Quantity supplied: 1 bearing
• Clutch kit included: No
• Clutch release bearing included: No
• Flywheel included: No
• Gearbox input shaft included: No
• Brand: Genuine Mazda
• Part No.: YF09-11-303
• Unhyphenated reference: YF0911303
• Associated Mazda references: ZZM0-11-303 / ZZP0-11-303
• MX-5 fitment: Applicable manual Mk3/Mk3.5/Mk3.75 NC and Mk4 ND/RF models

Typical reasons for replacement:

• Clutch assembly being replaced
• Flywheel removed for replacement or resurfacing
• Gearbox removed from the vehicle
• Bearing noisy while the clutch is disengaged
• Bearing rough, seized or excessively worn
• Excessive movement at the gearbox input-shaft support
• Original bearing damaged during removal
• Preventative renewal during major transmission work

Quantity advice: One pilot bearing is used per applicable manual-transmission vehicle. This listing supplies one bearing.

Fitment advice: Confirm that the vehicle is fitted with a manual transmission. Pilot-bearing application may depend on the engine, flywheel and gearbox combination, particularly on models sold in different markets.

Replacement advice: It is good practice to renew the pilot bearing whenever the gearbox, clutch or flywheel is removed. The bearing is inexpensive compared with the labour required to access it again.

Diagnostic advice: Noise that changes when the clutch pedal is pressed can also be caused by the clutch release bearing, gearbox input-shaft bearing or clutch assembly. Inspect all related components before attributing the fault solely to the pilot bearing.

Removal advice: Use a suitable blind-bearing puller or the removal method specified by Mazda. Avoid damaging the crankshaft or flywheel bearing bore.

Installation advice: Clean and inspect the bearing bore before installation. Drive or press the bearing squarely using a suitable tool that applies force only to the correct bearing race.

Lubrication advice: Do not pack the bearing cavity with excess grease. Use only the lubrication condition and installation procedure specified for the supplied bearing.

Alignment advice: Use the correct clutch-alignment tool when installing the clutch disc and pressure plate. Poor clutch alignment can make gearbox installation difficult and may damage the new pilot bearing.

Gearbox installation advice: Align the gearbox and engine carefully. Do not use the bellhousing bolts to force the gearbox into position, as this can damage the pilot bearing, clutch disc or input shaft.

Other items to inspect: Check the clutch disc, pressure plate, release bearing, clutch fork, pivot, flywheel, rear crankshaft seal, gearbox input-shaft seal and transmission mounting while the gearbox is removed.

Useful tools / consumables: Vehicle lift or axle stands, transmission jack, suitable blind-bearing puller, bearing-installation driver, clutch-alignment tool, calibrated torque wrench and the correct clutch or flywheel hardware where required.

Difficulty guide: DIY Difficulty: Advanced. The bearing itself is straightforward to replace once accessible, but the engine and gearbox must normally be separated.

Why Genuine Mazda? Genuine Mazda pilot bearings match the original crankshaft or flywheel bore and gearbox input-shaft arrangement. Correct fit and alignment are important for supporting the input shaft and maintaining smooth clutch operation.

What’s in the box: One Genuine Mazda clutch pilot / spigot bearing, part number YF09-11-303.

Installation notes: Remove the gearbox, clutch and flywheel components as required by the applicable Mazda workshop procedure. Extract the original bearing without damaging the mounting bore, then clean and inspect the surrounding area. Install the replacement bearing squarely to the specified position using a suitable driver. Align the clutch correctly and refit the gearbox without forcing the input shaft into the bearing. Confirm correct clutch and transmission operation before road use.