Injector sleeve sealing ring M102 M116 M117 – Mercedes R107 C107 W126 C126

Description

Injector sleeve sealing ring O-ring M102 M116 M117 – Mercedes R107 C107 W126 C126 W201

This rubber sealing ring for the injector sleeve ensures a good seal around the injector sleeve of the fuel injection system. The O-ring is used in various classic Mercedes petrol engines from the M102, M116, and M117 series with K-Jetronic, KA-Jetronic and certain KE-Jetronic versions.

The sealing ring is manufactured from FPM fluororubber, a material with good resistance to fuel, oil, and higher temperatures.

Due to age and heat, a sealing ring can harden, deform, or become damaged. As a result, the seal around the injector sleeve can lose its effectiveness.

False air and possible engine damage

A leaking seal around the injector sleeve can false air cause. This can disrupt the fuel-air mixture, with possible consequences including poor starting, irregular idling, hesitation, and problems tuning the engine.

Driving with false air for an extended period can cause engine damage under certain circumstances. If this results in an excessively lean mixture, the thermal load on the affected cylinder may increase. This can ultimately lead to damaged exhaust valves, valve seats, and, in the event of severe mixture deviations or detonation, damage to pistons.

Adjusting the engine to run richer is not a solution for a leaking seal. The cause of the false air must be remedied first.

We recommend replacing old or damaged seals preventively when the injector sleeves are removed.

This part is sold individually.

Suitable for Mercedes models

R107 – SL
• 350 SL – 1971-1980 – 107.043 – M116.984
• 380 SL – 1980-1985 – 107.045 – M116.960, M116.962
• 420 SL – 1986-1989 – 107.047 – M116.964
• 450 SL – 1973-1980 – 107,044 – M117,985
• 500 SL – 1980-1989 – 107.046 – M117.960, M117.962, M117.964
• 560 SL – 1986-1989 – 107,048 – M117,967

C107 – SLC
• 350 SLC – 1972-1980 – 107.023 – M116.984
• 380 SLC – 1980-1981 – 107.025 – M116.960
• 450 SLC – 1973-1980 – 107.024 – M117.985
• 450 SLC 5.0 – 1978-1980 – 107.026 – M117.960
• 500 SLC – 1980-1981 – 107.026 – M117.960

W116 – S-Class
• 350 SE – 1972-1980 – 116.028 – M116.984, M116.985
• 350 SEL – 1972-1980 – 116.029 – M116.985
• 450 SE – 1972-1980 – 116.032 – M117.986
• 450 SEL – 1972-1980 – 116.033 – M117.986

W126 – S-Class
• 380 SE – 1980-1985 – 126.032 – M116.961, M116.963
• 380 SEL – 1980-1985 – 126.033 – M116.961, M116.963
• 420 SE – 1985-1991 – 126.034 – M116.965
• 420 SEL – 1985-1991 – 126.035 – M116.965
• 500 SE – 1979-1991 – 126.036 – M117.961, M117.963, M117.965
• 500 SEL – 1979-1991 – 126.037 – M117.961, M117.963, M117.965
• 560 SEL – 1985-1991 – 126.039 – M117.968

C126 – SEC Coupé
• 380 SEC – 1981-1985 – 126,043 – M116,963
• 420 SEC – 1985-1991 – 126,046 – M116,965
• 500 SEC – 1981-1991 – 126,044 – M117,963, M117,965
• 560 SEC – 1985-1991 – 126,045 – M117,968

W201 – 190 series
• 190 E 2.3-16 – 1984-1988 – 201.034 – M102.983
• 190 E 2.5-16 – 1988-1993 – 201.035 – M102.990
• 190 E 2.5-16 Evolution I – 1989 – 201.036 – M102.991
• 190 E 2.5-16 Evolution II – 1990 – 201.036 – M102.992

Specifications and additional information

1. Mercedes OEM number: A0099971048
2. Product: injector sleeve sealing ring – O-ring
3. Material: FPM – fluororubber
4. Inner diameter: 19 mm
5. Cord thickness: 2.62 mm
6. Cross-section shape: O-ring
7. Engine series: M102 – M116 – M117
8. Application: sealing of the injector sleeve in the fuel injection system
9. Required quantity: depending on the engine version, usually four or eight pieces, provided that one sealing ring is used per injector sleeve.
10. Sale: per piece
11. Colour: The color of the sealing ring may differ from the product photo. This does not affect the application or function.
12. Maintenance: When replacing, also check the injector sleeves, injector holders, and other seals.
13. Inspection after assembly: Check the intake system for false air and fix any leaks before the engine is retuned.
14. Application data: The engine codes are taken from the Mercedes parts catalogue. The vehicle models are linked to these engine codes; please check the exact version and any changes during production when ordering.

Always check before purchase and installation whether the part is suitable and equivalent based on photos, description, and specifications; installed or used parts cannot be returned.