904
Gearbox housing with steel insert
Porsche gearbox types
Porsche Gearbox Rebuilds & Parts.
From the 356 to the 964.
These are the gearbox types we machine for, rebuild and supply — and in principle every gearbox of an air-cooled engine. Each page shows what is possible for your type.
Constantly in the workshop
Porsche 901 Gearbox
The gearbox of the early 911 and 912 — rebuild, limited-slip differential, Nadella stub axles.
Porsche 911 Gearbox
From the early 911 to the G-series: rebuild, limited-slip differential, driveshafts and stub axles.
Porsche 914 Gearbox
Rebuild, limited-slip differential and spray-oil lubrication after the 914/6 GT pattern.
Porsche 915 Gearbox
Our most requested gearbox — rebuild, 8:35 final drive, differential and stub axle.
Porsche 930 Gearbox
Turbo torque tests the driveline: rebuild, gearbox shafts and reinforced components.
Porsche G50 Gearbox
The robust gearbox of the late G-series — rebuild and limited-slip differential at 25–75 %.
Road cars & classics
Porsche 356 Gearbox
Parts for the oldest Porsche gearbox — 7:31 final drive and steel differential housing.
Porsche 902 Gearbox
The four-cylinder sibling of the early 911s: same gearbox family, same parts situation.
Porsche 912 Gearbox
Shares its gearbox with the early 911s — differential, rebuild and replacement parts.
Porsche 916 Gearbox
A rare car with a thin parts supply: limited-slip differential and parts made to sample.
Porsche 964 Gearbox
Carries the G50 gearbox family — rebuilt to factory specification, with a test-bench run.
Motorsport & works racers
Porsche 550 Spyder Gearbox
The Spyder gearbox: rebuilt, with parts remade from samples where no parts market remains.
Porsche 904 Gearbox
Gearbox shafts with dog-engaged 2nd gear, stub axles and differential for historic racing.
Porsche 906 Gearbox
Racing gearbox of the Carrera 6 — rebuild and parts made to sample or drawing.
Porsche 907 Gearbox
Endurance racing gearbox: rebuild and remanufacture of parts no longer available.
Porsche 908 Gearbox
A pure racing gearbox: Nadella stub axles and limited-slip differential from our own production.
Porsche 908/03 Gearbox
The Bergspyder gearbox — rebuild, Nadella stub axles and individual parts to sample.
Porsche 910 Gearbox
Bergspyder classic — stub axles and differential, without which no historic outing happens.
Porsche 917 Gearbox
The Le Mans legend — Nadella stub axles and limited-slip differential for historic use.
Porsche 935 Gearbox
Group 5 works racer — limited-slip differential, gear-cut and special components.
Porsche 956 Gearbox
Group C racing gearbox: rebuild with full measurement and parts made to sample.
Porsche 962 Gearbox
The most-raced Group C Porsche — rebuild, gear components, season support.
Your type not listed?
As a rule we rebuild every gearbox from an air-cooled Porsche engine. Just ask.
Parts catalogue
Newly made. In stock.
Everything shown here is made in-house — for the 904, 906, 901, 356 and 915. The full catalogue lists all 43 parts.
904 / 906
ZF clutch-type LSD, uprated
Porsche 904/906 ZF clutch-type limited-slip differential, uprated version with Nadella flanges.
901 / 904 / 906
Final drive 7:31, uprated
Porsche 901/904/906 final drive, uprated version, ratio 7:31, top quality.
356
Final drive 7:31, uprated, 12-bolt
356 final drive 7:31, uprated version with 12-bolt mounting.
915
Motorsport final drive 8:35
Porsche Motorsport final drive 8:35 in top quality, replacing the 7:31 whose tooth spread at the pinion head is unfavourable and damaged on almost every second gearbox.
356
Uprated swing axles from 110 hp
Uprated swing axles for the 356 for engine outputs from 110 hp, with matched splines in the brake drums / wheel hubs.
Inquiry
What is on your bench?
Gearbox type and a few lines about your request — that is all we need for a first assessment. A photo helps but is not required. The answer comes from the machinist, not from sales.
Send inquiry
Reply usually within 24 hours — from the managing director himself, no ticket system, no call centre. We call back on request.
or directly: 06628 9159093 · info@antriebstechnik-schmidt.de