Bevel gears, crown wheels for Mercedes-Benz 300 SL (W 198) rear axles now available

Article by Christian Andrei, on November 9, 2015

Finding genuine bevel gears as well as crown wheels of all rear-axle ratios for the Mercedes-Benz 300 SL (W 198) is a very difficult mission to achieve. After all, the Mercedes-Benz 300 SL (W 198) was first produced more than half a century ago, specifically in 1954 when the carmaker first launched the sports car.

However, Mercedes-Benz Classic just announced that it could provide some gear ratios for the Mercedes-Benz 300 SL (W 198) that had been out of production and availability for several decades.

By employing machine settings from the 1950s, Mercedes was able to reproduce accurate and precise parts for the 300 SL (W 198), which has been known for its remarkable looks and performance.

For decades, the standard gear ratio for the Mercedes-Benz 300 SL (W 198) has been available as a Mercedes-Benz genuine part. This ratio -- 1:3.64 – allows the super sports car to achieve a max speed of 235 km/h.

However, customers were given the option to avail of alternative rear-axle gear ratios for their 300 SL models, allowing them to have their sports cars built according to their preferences. These varying ratios allowed customers to modify the driving nature of the vehicle to become a high-speed demon or a fast-acceleration monster.

Unfortunately, bevel gear or crown wheel sets of many 300 SL variants – like the 300 SL Gullwing (model variants 198.040 and 198.043, made between 1954 and 1957) and 300 SL Roadster (model variant 198.042, made between 1957 and 1963) -- have been unavailable, since a long time ago.

But owners of these variants could now celebrate, since these specific parts are available, with utmost authenticity. Rear-axle gear sets with part numbers A 198 350 00 39 to A 198 350 09 39 feature ratios from 1:3.25 for top vehicle speed to 1:4.11 for max acceleration.

On the other, rear-axle gear sets also feature intermediate ratios like 1:3.42 (for higher speed) and 1:3.89 (for higher acceleration). With these sets, rear axles of several W 198 variants can now be restored to their pristine state.

These gear sets are available under the 24-hour service at all Mercedes-Benz sales partners. Since reproduction of the new gear sets needs new tooling, Mercedes delivered original gear-cutting machines for the raw forgings to a handful of companies around the world.

As these machines have the necessary settings to reproduce the gear sets, Mercedes is able to guarantee their authenticity. On the other hand, Mercedes-Benz Classic also successfully reproduced original gear sets for the W 113 (Pagoda, made between 1963 and 1971) and the 300 S and 300 Sc models (W 188, made between 1951 and 1958).

Mercedes-Benz Classic was also able to reproduce corresponding parts for the Mercedes-Benz 300 (W 186 and W 189, made between 1951 and 1962), Mercedes-Benz 600 (W 100, made between 1963 and 1981), W 111/112 (1959-1968) and W 108/109 (1965-1972).

Also available are gear sets for the Mercedes-Benz W 136 model series (post-war models 170 V, 170 D, 170 S, 170 S-V and 170 S-D, made between 1946 and 1955).

Press Release

Genuine spare parts: bevel gears and crown wheels for W 198 rear axles: Again available: rear-axle ratios for the 300 SL

The bevel gears and crown wheels of all rear-axle ratios for the 300 SL (W 198) are again available as genuine spare parts. Thanks to a costly reproduction process, Mercedes-Benz Classic is now able once again to offer some gear ratios that have not been available for several decades. This allows the famous "Gullwing" and Roadster to be restored with utmost authenticity. Mercedes-Benz machine settings from the 1950s guarantee outstanding accuracy of reproduction – for ultimate smoothness of operation and fascinating driving dynamics even more than 60 years after the fascinating sports car made its debut in 1954.

Stuttgart. – Ever since the mid-1950s, the Mercedes-Benz 300 SL (W 198) has been a source of fascination as a super sports car with exceptional performance, engineering roots on the racetrack and epoch-making looks. The standard rear-axle gear ratio was 1:3.64, allowing a top speed of 235 km/h. To enable customers to exploit the vehicle's potential entirely in line with their personal preferences, the 300 SL models were optionally available with alternative rear-axle gear ratios. This made it possible to further vary the characteristics of the vehicle – either towards high top speed (up to 250 km/h) or towards high acceleration.

The standard gear ratio has always been available as a Mercedes-Benz genuine part. However, the bevel gear/crown wheel sets of many individual variants have long since been unavailable. In order once again to be able to offer the full range of rear-axle gear ratios for the 300 SL "Gullwing" (model variants 198.040 and 198.043, manufactured from 1954 to 1957) and 300 SL Roadster (model variant 198.042, manufactured from 1957 to 1963), Mercedes-Benz Classic has now had them reproduced with utmost authenticity.

Complete range for exclusive classic vehicles

The range of rear-axle gear sets with part numbers A 198 350 00 39 to A 198 350 09 39 extends from ratios of 1:3.25 for maximum speed to 1:4.11 for maximum acceleration. As intermediate ratios, the range of rear-axle gear ratios also includes 1:3.42 (for higher speed) and 1:3.89 (for higher acceleration). This means that the rear axles of the different W 198 variants can once again be restored to their original condition. Like any other spare part from Daimler, the gear sets are available under the 24-hour service through all Mercedes-Benz sales partners.

In addition to the final drives for the two variants of the 300 SL (W 198), Mercedes-Benz Classic has also reproduced the corresponding parts for the SL successor model W 113 ("Pagoda", 1963 to 1971) as well as for the sporty-luxurious models 300 S and 300 Sc (W 188, 1951 to 1958) and the prestigious saloons Mercedes-Benz 300 (W 186 and W 189, 1951 to 1962) and Mercedes-Benz 600 (W 100, 1963 to 1981). There are also gear sets for the rear axles of the S-Class predecessors W 111/112 (1959 to 1968) and W 108/109 (1965 to 1972) as well as for the W 136 model series with the post-war models 170 V, 170 D, 170 S, 170 S-V and 170 S-D (1946 to 1955).

Reproduction of the gear sets for the 300 SL required new tooling. The raw forgings are machined on original gear-cutting machines, which were delivered to only a handful of companies worldwide. The necessary machine settings provide the guarantee of total authenticity. They are part of the special historical expertise of Mercedes-Benz.

Further information on prices and availability can be found in the Parts Search section of the website www.mercedes-benz.com/classic-teile.

Available rear-axle ratios for the 300 SL (W 198)


300 SL "Gullwing" (W 198)
A 198 350 00 39: Ratio 1:3.42 (option for higher top speed)
A 198 350 01 39: Ratio 1:3.64 (standard)
A 198 350 02 39: Ratio 1:3.25 (option for highest top speed)
A 198 350 04 39: Ratio 1:4.11 (option for highest acceleration)
A 198 350 05 39: Ratio 1:3.89 (option for higher acceleration)

300 SL Roadster (W 198 II)
A 198 350 03 39: Ratio 1:3.64 (standard)
A 198 350 06 39: Ratio 1:3.25 (option for highest top speed)
A 198 350 07 39: Ratio 1:3.42 (option for higher top speed)
A 198 350 08 39: Ratio 1:3.89 (option for higher acceleration)
A 198 350 09 39: Ratio 1:4.11 (option for highest acceleration)

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