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- Porsche 356B 1959-63
- Porsche 356C 1963-65
The OE Match Needle Cage, 2nd Gear 4-Speed is a premium-quality replacement gearbox bearing designed to support the rotating components of second gear within compatible Porsche 4-speed manual transmissions. Manufactured to OE specifications for fit, precision and durability, this needle cage bearing ensures smooth gear rotation, minimises friction and maintains accurate gearbox operation under varying driving conditions.
Fits:
- Porsche 356B 1959-63
- Porsche 356C 1963-65
Diagram Ref No 38
Manufactured from high-strength, case-hardened bearing steel with precision-ground needle rollers, the bearing is engineered to withstand high rotational speeds, heavy gear loads and continuous lubrication within the transmission. Designed for direct OE-style installation, it restores smooth gear engagement and contributes to the long-term reliability and efficiency of the gearbox, making it ideal for transmission rebuilds and restoration projects.
What This Product Does:
- Supports the rotating components of second gear.
- Reduces friction between the gear and shaft.
- Ensures smooth gear rotation under load.
- Maintains correct gearbox tolerances and alignment.
- Distributes loads evenly across the bearing surface.
- Helps deliver smooth and precise gear changes.
- Reduces wear on transmission components.
- Forms an essential part of the 4-speed manual gearbox.
Symptoms Of Wear Or Failure:
- Whining or rumbling noises from the gearbox.
- Difficulty engaging second gear.
- Rough or notchy gear changes.
- Increased gearbox vibration.
- Excessive internal gearbox play.
- Metallic particles present in the gearbox oil.
- Premature wear of gears or shafts.
- Gearbox noise that changes with vehicle speed.
- Reduced transmission efficiency.
- Gearbox failure if bearing deterioration is left unchecked.
Why Replacement Matters:
- The needle cage bearing is subjected to constant rotational loads, high contact pressures and continuous lubrication while the vehicle is in operation. Over time, normal wear, contamination or insufficient lubrication can damage the needle rollers or bearing cage, reducing the bearing's ability to support the gear correctly.
- A worn needle cage can increase internal gearbox friction, accelerate wear of gears and shafts, and lead to noisy or difficult gear engagement. If left unrepaired, bearing failure can cause significant internal transmission damage, resulting in costly gearbox repairs or complete transmission overhaul.
- Replacing a worn needle cage bearing restores smooth gear rotation, reduces internal friction and helps preserve the accuracy and reliability of the gearbox. The OE Match replacement provides factory-style fitment, precision-manufactured hardened steel construction and long-lasting durability, ensuring dependable performance and extending the service life of your Porsche 4-speed manual transmission.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
74130228700
The product you are viewing cross references to these numbers
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- 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 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
- Porsche 914 (1970-1976)
- Porsche 912E 4CYL 1976
This tapered roller bearing, also known as a differential carrier bearing, is used in the rear output assemblies of the differential and manual transmission on various classic Porsche models. Engineered as a precise OE replacement, it meets the original Porsche specifications for dimensions, load capacity, and tolerance. The bearing installs directly without modification, restoring proper carrier alignment, support, and smooth drivetrain operation.
Sold individually.
Fits:
Porsche 911 1969-1971 * with magnesium pressure cast housing
Porsche 911 1972 - 1989
Porsche 912 1969 * with magnesium pressure cast housing
Porsche 912E 1976
Porsche 914 1970 - 1976
Porsche 930 Turbo 1976-1989
Porsche 911 (964) C2 1989 - 1994 (rear right only)
Porsche 911 (964) Turbo 1990 - 1994 (rear right only)
Porsche 911 (993) 1995 - 1998 (rear right only)
Porsche 924 1976 - 1985
Porsche 928 1978 - 1995
Diagram ref no 8
• Function: This bearing supports and aligns the differential carrier or manual transmission rear output shaft, allowing smooth rotation under load and controlling radial/axial movement of the carrier assembly. It ensures the differential or transmission output runs true, quietly and with minimal friction.
• Position on Car: Usually located in the manual transmission/differential rear housing (for example in the rear of the 911 manual gearbox, or the transaxle/differential carrier area). It may serve as the bearing between the carrier housing and the output shaft or differential ring-gear carrier.
• This part is critical for proper gear meshing, quiet running, bearing life and overall driveline integrity.
With age and use, the bearing can develop wear in its rollers/races, looseness, noise, increased friction, or misalignment. A worn bearing may lead to drivetrain noise, vibration, premature gear or bearing damage, loss of efficiency, or catastrophic failure. The bearing supports the differential carrier output shaft – incorrect bearing performance can result in excessive play, wobble, and stress on neighbouring components.
When to Replace:
• During a differential or transmission rebuild, where the carrier, output shafts or bearings are being replaced — it’s best practice to install new bearings.
• If you detect noise (growl, whine, hum) coming from the rear differential or output area, particularly under load or at higher speed. If there is measurable play / movement in the differential carrier or abnormal backlash in the gearset. If you notice metal debris, “bearing-noise” or vibration emanating from the drivetrain output / differential area.
• When you upgrade or service the manual transmission/differential – matching new components with new bearings ensures optimum alignment, longevity and performance.
Replacing this bearing means you restore correct support and alignment, minimise noise, protect the differential and improve durability. This part is critical for proper gear meshing, quiet running, bearing life and overall driveline integrity.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99905902702
The product you are viewing cross references to these numbers
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
Pinion shaft bearing
OE Match pinion shaft bearing for selected Porsche 964, 993, 996 Turbo and 996 GT3 transmissions. Supplied diagram information identifies a four-point or angular-contact bearing measuring 40 × 82 × 18 mm.
Fits:
- Porsche 964 1989 - 1994
- Porsche 993 1995 - 1998
- Porsche 996 Turbo 2001 - 2005
- Porsche 996 GT3 1999 - 2005
Diagram Ref no 25
What This Product Does
This gearbox bearing supports the rotating pinion shaft and helps maintain its position within the transmission. Correct bearing condition is important for shaft alignment and controlled rotation under load.
Functions
- Supports pinion shaft rotation.
- Helps keep the shaft correctly located.
- Limits friction at the bearing interface.
Symptoms of Fault
Possible signs include speed-related whining, rumbling, excessive shaft movement or metallic debris in gearbox oil. These symptoms require diagnosis: clutch, linkage, mounts and lubrication faults can produce similar complaints.
Why Replacement Matters
Renewing a worn bearing helps address unwanted shaft movement and rough rotation during transmission repairs. Inspect neighbouring bearings, gears, seals and retaining components during dismantling rather than assuming this bearing alone explains every symptom.
FAQs
Can just one bearing be renewed?
It may be appropriate after inspection, but the condition of the remaining transmission components should guide the repair.
Does gearbox oil specification matter?
Yes. Use the lubricant specified for the particular transmission; changing oil does not repair mechanical bearing damage.
How should compatibility be checked?
Compare reference 99730229300, the vehicle details and the gearbox code before selecting the bearing.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99905222701
The product you are viewing cross references to these numbers
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Fits:
Porsche 993 Carrera / RS / Turbo 1995>>
Porsche 997 Turbo 2007-09 G97.50
Porsche 997 Turbo GT2 2008-09 G97.88
Porsche 997 GT2 RS 2011 G97.88
Porsche 997 GT3 / GT3 RS 2007-11 G97.90/92
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99911018103
The product you are viewing cross references to these numbers