Genuine Mazda Prop Shaft to Differential Fastener Kit – Single Assembly • G-N00-4-001

Genuine Mazda Prop Shaft to Differential Fastener Kit – Single Assembly

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

This kit contains one shoulder bolt, one spring washer and one retaining nut used to secure the rear propeller-shaft flange to the differential input flange.

The shoulder bolt locates the two flanges accurately, while the spring washer and nut provide the required clamping force. Correct flange alignment and securely tightened hardware are essential because this connection transmits engine torque from the propeller shaft into the differential.

Four identical fastener assemblies are used at the propeller-shaft-to-differential connection. This listing supplies one complete assembly for one mounting position. Select a quantity of four when replacing every fastener at the flange.

SKU clarification: G-N00-4-001 is MazSpec’s bundle SKU for one complete three-piece fastener assembly. It is not an individual Mazda OE part number.

• Part type: Propeller-shaft-to-differential fastener assembly
• Common names: Propshaft flange bolt kit / differential flange fixing kit
• Location: Rear propeller-shaft flange to differential input flange
• Function: Secures and locates the propeller shaft against the differential flange
• Fastener positions fitted per vehicle: 4
• Complete assemblies supplied: 1
• Total individual components supplied: 3
• Shoulder bolts supplied: 1
• Spring washers supplied: 1
• Retaining nuts supplied: 1
• Propeller shaft included: No
• Differential included: No
• Flanges included: No
• Brand: Genuine Mazda components
• MazSpec bundle SKU: G-N00-4-001
• Bolt reference: P015-25-123
• Spring washer reference: 9997-11-000
• Nut reference: 1368-25-124

Kit contents:

• 1 x Genuine Mazda propeller-shaft shoulder bolt – P015-25-123
• 1 x Genuine Mazda spring washer – 9997-11-000
• 1 x Genuine Mazda retaining nut – 1368-25-124

Typical reasons for replacement:

• Original bolt, washer or nut heavily corroded
• Bolt head rounded or damaged
• Threads damaged during removal
• Fastener seized through corrosion
• Spring washer flattened, fractured or missing
• Propeller-shaft removal or replacement
• Differential removal or replacement
• Original hardware missing or unsuitable for reuse

Fitment advice: This hardware is used with the original propeller-shaft and differential flange arrangement 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.

Quantity advice: One kit services one flange position. Four kits are required to replace the complete propeller-shaft-to-differential fastener set. The complete four-position kit is available separately under MazSpec SKU G-N00-4-002.

Replacement advice: Inspect all four assemblies before ordering. Where the original hardware is similarly corroded or damaged across the flange, replacing all four assemblies together provides consistent clamping.

Other items to consider: Inspect the propeller-shaft flange, differential input flange, universal joints, differential pinion seal and surrounding drivetrain 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 the affected fastener position. Corrosion can substantially increase removal difficulty.

Why Genuine Mazda? Genuine Mazda flange hardware matches the original shoulder diameter, shank length, thread specification, washer design and nut dimensions. Correct components help maintain accurate flange location and secure driveline clamping.

What’s in the box: One Genuine Mazda shoulder bolt, one Genuine Mazda spring washer and one Genuine Mazda retaining nut, providing one complete propeller-shaft-to-differential fastener assembly.

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 affected fastener and inspect the flange faces and bolt apertures. Clean away corrosion and debris without damaging the machined surfaces. Install the replacement shoulder bolt, spring washer and nut, then tighten the assembly to the applicable Mazda specification. Where multiple assemblies are replaced, tighten the fasteners progressively and evenly across the flange.