Gearbox Detent. Porsche 911 with 915 Gearbox  ›  91530313100

Gearbox Detent for 915 Gearbox
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Fits:

• Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
• Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
• Porsche 911 1978-1983 3.0L / SC
• Porsche 911 1984-1986 3.2L
• Porsche 911 1987-1989 3.2L G50
• Porsche 911 1978-1989 3.3L Turbo (930)

Diagram Ref No 21

What This Product Does

The detent operates within the transmission selector assembly, where it provides a locating and retaining action. Depending on the gearbox application, it is installed within the transmission case, gear housing or front transmission cover.

Functions

• Provides a defined locating point within the selector mechanism
• Assists with retaining the associated internal component in position
• Supports controlled selector movement inside the gearbox
• Replaces a worn or damaged detent during transmission inspection or rebuilding

Technical Details

• Part number: 91530313100
• Manufacturer: Porsche
• Component description: transmission detent or detent catch
• Identified as a short detent in applicable Type 915 transmission diagrams
• Diagram quantity varies between one, three and four according to the transmission assembly

Symptoms of Fault

• Notchy or difficult gear selection
• Less positive engagement through the selector mechanism
• A selected gear unexpectedly disengaging
• Visible scoring, wear or deformation found during gearbox dismantling
• Metal particles in drained transmission oil requiring further internal inspection

Why Replacement Matters

Wear or damage to the detent can affect the intended movement and retention of the selector assembly. Renewal during a transmission overhaul helps return the mechanism to its specified configuration. The corresponding spring, sleeve, locking components, selector parts, casing surfaces, seals and transmission oil should also be inspected while the gearbox is dismantled.

FAQs

• Is this detent used with a Type 915 gearbox?
  It is identified in Type 915 transmission case and gear housing diagrams, as well as selected related transmission assemblies. Confirm the gearbox code and part number before ordering.
• How many detents are required?
  The quantity depends on the particular transmission and diagram. The supplied exploded diagrams specify assemblies using one, three or four pieces.
• Should associated parts be checked?
  Yes. Inspect the spring, sleeve, selector components, locking parts, housing surfaces and lubricant for evidence of wear or damage.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

91530313100

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