Description
Rear Transmission Mount – 171399151A
OES Rear Transmission Mount. Transmission arm to under body, under / behind the transmission.
Part numbers: 171399151A / 171 399 151 A
Fits Mk1 & Mk2 Sciroccos and all A1 chassis vehicles.
The Rear Transmission Mount (171399151A) is a vital rubber-to-metal bonded part designed to secure the back of the drivetrain in classic Volkswagen A1 chassis vehicles. Furthermore, this specific mount is responsible for holding the rear of the transmission to the body of the car. Because it carries a significant portion of the drivetrain’s weight, keeping this mount in good condition is essential for smooth shifting and quiet operation.
Product Details and Function
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Primary Role: This mount stabilizes the transmission and dampens the vibrations created by the engine and gearbox.
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Design: It features a heavy-duty rubber core bonded to a steel outer shell for maximum durability.
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Performance Benefit: A fresh rear mount prevents the transmission from “jumping” during hard acceleration and keeps the shifter linkage properly aligned.
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Installation: This part is located at the back of the transmission and bolts directly to the vehicle’s subframe or body.
Supported Vehicle Fitment
This rear mount is compatible with a wide range of manual and automatic Volkswagen models from the 1970s through the early 1990s:
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Scirocco: Fits both Mk1 and Mk2 models (1975–1992).
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Rabbit / Golf Mk1: Includes hatchbacks, GTI models, and Diesels (1975–1984).
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Jetta Mk1: Fits all Jetta models from 1980 through 1984.
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Caddy / Rabbit Pickup: Fits all years of the Mk1 truck (1980–1983).
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Cabriolet: Fits the Mk1-based Cabriolet models up through 1993.
Symptoms of a Failing Rear Mount
When the internal rubber of this mount cracks or sags, you may notice several specific issues:
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Difficulty selecting gears or a “crunching” feel in the shifter.
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A loud thumping or banging sound coming from under the floorboards during acceleration. For example, when letting out the clutch.
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Excessive vibration. As a result, you will feel this when accelerating and decelerating the moast. Also, throughout the entire cabin while the car is idling.
