Genuine Mazda Prop Shaft to Differential Fastener Kit – Set of 4 • G-N00-4-002

Genuine Mazda Prop Shaft to Differential Fastener Kit – Set of 4

Complete Genuine Mazda propeller-shaft-to-differential fastener kit for Mazda MX-5 Mk1 NA, Mk2/Mk2.5 NB, Mk3/Mk3.5/Mk3.75 NC and Mk4 ND/RF models.

The kit contains the four shoulder bolts, four spring washers and four nuts used to secure the rear propeller-shaft flange to the differential input flange.

These fasteners transmit the engine and gearbox torque from the propeller shaft into the differential. Correct shoulder-bolt dimensions and secure clamping are therefore essential for maintaining flange alignment and preventing movement between the two driveline components.

The original hardware is exposed beneath the vehicle and may become heavily corroded, seized or damaged during removal. Rounded bolt heads, damaged threads or weakened spring washers can prevent the flange joint from being tightened securely.

Four complete fastener assemblies are fitted per vehicle. This listing supplies all twelve Genuine Mazda components required for one complete propeller-shaft-to-differential connection.

SKU clarification: G-N00-4-002 is MazSpec’s bundle SKU for the complete kit. It is not an individual Mazda OE part number.

• Part type: Propeller-shaft-to-differential fastener kit
• Common names: Propshaft flange bolt kit / prop shaft fixing kit / differential flange hardware
• Location: Rear propeller-shaft flange to differential input flange
• Function: Secures the propeller shaft to the differential
• Fastener positions per vehicle: 4
• Total individual components supplied: 12
• Quantity of shoulder bolts supplied: 4
• Quantity of spring washers supplied: 4
• Quantity of nuts supplied: 4
• Suitable for one complete vehicle: Yes
• Propeller shaft included: No
• Differential included: No
• Flange included: No
• Brand: Genuine Mazda components
• MazSpec bundle SKU: G-N00-4-002
• Bolt reference: P015-25-123
• Spring washer reference: 9997-11-000
• Nut reference: 1368-25-124

Kit contents:

• 4 x Genuine Mazda propeller-shaft shoulder bolts – P015-25-123
• 4 x Genuine Mazda spring washers – 9997-11-000
• 4 x Genuine Mazda retaining nuts – 1368-25-124

Typical reasons for replacement:

• Original fasteners heavily corroded
• Bolt heads rounded or damaged
• Bolt or nut threads damaged during removal
• Fasteners seized through corrosion
• Spring washers flattened, fractured or missing
• Propeller-shaft removal or replacement
• Differential removal or replacement
• Gearbox, clutch or drivetrain refurbishment
• Original hardware missing or unsuitable for reuse

Fitment advice: The same complete hardware arrangement is used at the propeller-shaft-to-differential flange across the MX-5 NA, NB, NC and ND generations. Confirm compatibility where an aftermarket propeller shaft, alternative differential or drivetrain conversion has been installed.

Replacement advice: Replace all four assemblies together where the original hardware is heavily corroded or damaged. Mixing worn and new flange fasteners can result in inconsistent clamping across the joint.

Other items to consider: Inspect the propeller-shaft flange, differential input flange, universal joints, propeller-shaft centre section, differential pinion seal and surrounding mounting hardware. Check for flange damage or excessive driveline movement before installing the new fasteners.

Useful tools / consumables: Vehicle lift or axle stands, suitable sockets and spanners, calibrated torque wrench, penetrating fluid, wire brush and thread-cleaning equipment.

Difficulty guide: DIY Difficulty: Moderate. Access is beneath the vehicle and the propeller shaft may need to be rotated to reach each fastener. Corrosion can substantially increase removal difficulty.

Why Genuine Mazda? Genuine Mazda flange fasteners match the original shoulder diameter, shank length, thread specification, washer design and nut dimensions. Correct hardware helps maintain accurate flange alignment and secure driveline clamping.

What’s in the box: Four Genuine Mazda shoulder bolts, four Genuine Mazda spring washers and four Genuine Mazda retaining nuts, providing one complete propeller-shaft-to-differential fastener kit.

Installation notes: Raise and support the vehicle securely before working beneath the drivetrain. Mark the relative position of the propeller-shaft and differential flanges before separation where maintaining the original orientation is required. Remove the four original fastener assemblies and inspect both flange faces and bolt apertures. Clean away corrosion and debris without damaging the machined flange surfaces. Refit the propeller shaft in the correct orientation and install the new bolts, spring washers and nuts. Tighten the fasteners progressively and evenly to the applicable Mazda specification. Rotate the propeller shaft to confirm free movement and check the flange joint again after installation.