★★★★★ Sorted the clunk
Dave P · Nelson · Example review Rang the team first to check it was the right one for my rego. It was. Fitted by my local mechanic, no more clunk on take off.
Made to order, allow about 5 working days
Mazda RX7 FD3S Rebuilt Rear Diff 3.9 LSD
Suits: Mazda RX7 FD3S
$3,995 incl GST
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Fitting availableFitted in store at Gearhead Diffs, Sydenham
12 months or 20,000 kmOn parts we supply and fit
Fitment
SuitsMazda RX7 FD3S Rebuilt Rear Diff 3.9 LSDMakeMazdaModelRX7PositionRearRatio3.9BrandGearhead DiffsSKUEXD-MAZ-RX7-FD-R-390-LSD
Not sure it suits your vehicle? Send us your rego and we will confirm before you order.
Warranty and delivery
All work and parts supplied by Gearhead Diffs are covered for 12 months or 20,000 km, whichever comes first, provided the vehicle is serviced to schedule, filled with the correct spec Red Line oil and not misused.
Shipped NZ wide by courier. Overnight to most South Island addresses, one to two days to the North Island, rural delivery can add a day. Freight is calculated at checkout, or free when it travels in the box with an exchange diff.
Description
Suits: Mazda RX7 FD3S
Oil Capacity: 2L
Recommend Oil: Redline 75W140NS
Ratio: 3.9
Carrier Type: LSD
Key Features:
- Complete Rebuild: Every differential is fully rebuilt using new bearings and seals.
- Solid Pinion Bearing Spacer Upgrade: Replaces the factory crush sleeve for improved strength, durability, and consistent preload under high load.
- Factory Helical / Torsen LSD: Smooth torque biasing differential for predictable handling and excellent street performance.
- Ratio: Hard-to-find factory gearing offering good acceleration while maintaining comfortable cruising RPM.
- 12-Month Warranty: Enjoy peace of mind with our 12 month / 20,000 km warranty when using Redline oil supplied by us.
- Cusco 1.5 Way LSD Upgrade: Available for additional costs.
- Free Shipping: Free shipping NZ wide!
If you have any questions, Please get in touch with us beforehand.
Comes painted with zinc bolts and vapour blaster rear cover.
Reviews
No reviews on this product yet. Bought one? We would like to hear how it went. Write a review Bought this? You'll get a review link by email three weeks after it ships. Only customers who have bought the product can review it. Example reviews These three are examples to show the layout. Real reviews from verified buyers replace them as they come in.
★★★★★ Quiet as new, swapped it over in an afternoon
Mark T · Timaru · Example review Had the classic whine at 80. Diff turned up next morning, swapped it over myself with the fitting guide, return label was in the box. Three weeks on and dead quiet. Core charge came back inside a week.
Reply from the Gearhead Diffs teamCheers Mark, glad the guide did the job. Thanks for getting the core back quick.
★★★★★ Good part, freight took an extra day
Hemi R · Gisborne · Example review Rural delivery so it was two days not one. The part itself is mint and the oil was in the box which I did not expect.
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