Injector reference across the Porsche timeline: 3.2 Carrera, 964, and 993 air-cooled port injection, the M96 and M97 water-cooled generation with its discontinued OEM injectors, 944 and 928 transaxle cars, and the 9A1 direct injection engines from 2009 onward. Bosch and Porsche part numbers, honest notes on the CIS mechanical era, and upgrade paths for turbo builds. Compiled by the injector cleaning department at Boost Lab, Inc.
Porsche has used nearly every injection technology ever fitted to a road car, and knowing which era your car belongs to decides the service path. The 3.2 Carrera (1984-89), 964, and 993 run conventional Bosch port injectors under Motronic, as do the 944, 951, 968, and 928 transaxle cars. These are classic EV1 era Bosch units that respond beautifully to ultrasonic cleaning, and on thirty year old air-cooled cars, cleaning the originals is usually smarter than gambling on the dwindling replacement supply.
The water-cooled M96 and M97 generation (986 and 987 Boxster, 996 and 997 Carrera, Cayman) runs Bosch port injectors under Porsche part numbers: 99660612200 (Bosch 0280156053) across the 1999-08 range and 99760512300 (Bosch 0280158116) on the 2005-08 3.6 and 3.8 cars. The catch is availability: the earliest 986 and 996 injectors are no longer produced by Bosch, and the rest of the family is heading the same way. That makes documented cleaning and flow matching of original sets the sustainable path for these cars, exactly as it became for the air-cooled ones.
From 2009, the 9A1 engine family (997.2, 991, 981, 718) moves to direct fuel injection. DFI injectors run at true GDI pressures and a port pressure test tells you nothing honest about them; ours are tested on the Carbon Zapp bench at up to 300 bar with per injector flow and leak documentation. Before all of this, the 911 SC and 930 Turbo era runs Bosch K-Jetronic CIS mechanical injection, and the earliest 911s run Bosch mechanical injection pumps; contact us through the repair form before shipping mechanical era hardware and we will confirm the right path.
| Application | Years | System | OEM / Ref PN | Notes |
|---|---|---|---|---|
| 911 SC / 930 Turbo | 1976-83 | K-Jetronic CIS mechanical | 930 110 225 02 family | Mechanical injectors, contact us before shipping |
| 911 3.2 Carrera | 1984-89 | Motronic port EFI | Bench data on request | Bosch EV1 era |
| 964 / 993 | 1989-98 | Motronic port EFI | Bench data on request | Last air-cooled, originals worth preserving |
| 944 / 951 / 968 / 928 | 1982-95 | Port EFI | Bench data on request | Bosch EV1, cleaning responsive |
| 986 Boxster / 996 Carrera | 1997-00 | Port EFI, M96 | OEM Bosch, now discontinued | Cleaning the originals is the sustainable path |
| 986 S / 987 / 996 / 997 | 1999-08 | Port EFI, M96 / M97 | 99660612200 / Bosch 0280156053 | Six per set |
| 997 / Cayman / Boxster 3.6, 3.8 | 2005-08 | Port EFI, M97 | 99760512300 / Bosch 0280158116 | Six per set |
| From 2009 the 9A1 engine family moves to direct fuel injection. DFI injectors require testing at true GDI pressures; a port pressure test is not a meaningful evaluation. | ||||
| 997.2 / 991 / 981 / 718 | 2009 on | DFI direct injection | Bench data on request | Carbon Zapp tested at up to 300 bar |
| ID1050-XDS / ID1300-XDS, NA cars | 3.2 Carrera to 997.1 | Port upgrade, set of 6 | 14mm purple adapters | Naturally aspirated fitment |
| ID1050-XDS, Turbo cars | 996 / 997.1 Turbo | Port upgrade, set of 6 | 14mm grey adapter top | The standard turbo build injector |
996 and Boxster misfire codes get blamed on coils and the famous engine gremlins first, but a fouled injector set is the cheaper and more common answer. Per injector flow data ends the guessing.
3.2 Carrera, 964, and 993 sets arrive varnished from storage and leave matched to within a couple percent with documentation, which matters on cars where originality carries real value.
996 and 997 Turbo builds running ID1050-XDS sets get flow verification and dead time documentation before tuning. As an authorized Injector Dynamics dealer we can supply the set and prove it before it goes in.
Cleaning is the answer, and it is a good one. The earliest 986 and 996 injectors are no longer produced by Bosch, but these are conventional port injectors that respond extremely well to ultrasonic service. A cleaned, resealed, flow documented original set typically performs to spec and keeps the car on factory hardware.
The 1999-08 range shares Porsche 99660612200 (Bosch 0280156053), and the 2005-08 3.6 and 3.8 cars use 99760512300 (Bosch 0280158116), six per engine. The earliest 1997-00 986 and 996 cars use an earlier discontinued Bosch unit, which is exactly the set most worth cleaning rather than replacing.
Yes. The 9A1 family from 2009 onward (997.2, 991, 981, 718) uses direct injectors that must be evaluated at true GDI pressures. Our Carbon Zapp bench tests up to 300 bar with per injector flow and leak documentation, which most shops cannot do.
The Motronic port injection cars (3.2 Carrera, 964, 993, plus the 944 and 928 families) are core work for our ASNU bench. The K-Jetronic CIS cars (911 SC, 930 Turbo) and earlier mechanical injection cars use fundamentally different technology, so reach out through the repair form before shipping and we will confirm the right path.
The established path is Injector Dynamics sets of six: ID1050-XDS with grey adapter tops for 996 and 997.1 Turbo, and purple adapter ID1050 or ID1300 sets for naturally aspirated cars from the 3.2 Carrera through the 997.1. As an authorized ID and FIC dealer we can spec, supply, and flow verify the set with documentation for your tuner.
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