Genuine Bosch III 4-Hole Fuel Injector Upgrade
Direct Replacement for GM Rochester 5235210 / 5235367
Fits GM 2.8L V6 Applications
This listing is for one (1) Genuine OEM Bosch III 4-hole fuel injector that is a direct replacement upgrade for the original GM Rochester Multec fuel injectors used in many GM 2.8L V6 engines.
Please select the quantity needed for your vehicle.
For a complete V6 injector replacement, order quantity 6.
These injectors replace the original single-hole Multec style injectors with a newer Bosch III 4-hole design for improved fuel atomization and more consistent fuel delivery.
These are genuine Bosch OEM injectors — not aftermarket replacements.
Direct Replacement For:
GM / Rochester:
- 5235210
- 5235367
Bosch:
- 0280150221
GM:
- 17111297
Please note: These replacement injectors will have a Bosch part number stamped on the injector body. They will not be stamped with the original GM/Rochester number. They are matched replacement units with the correct fitment, flow rate, impedance, connector style, and operating characteristics.
Upgrade Benefits:
- Improved fuel atomization from Bosch 4-hole nozzle design
- Faster injector response time
- More precise fuel metering
- Improved spray pattern
- Improved coil design
- Better leak resistance
- Modern composite body design
- Resistant to external rust/corrosion
No modifications are required. These injectors are a direct plug-and-play replacement.
Specifications:
- Genuine Bosch OEM injector
- Bosch III design
- 4-hole nozzle
- High impedance
- Direct-fit connector
- Stock replacement flow rate
- Ready to install
Vehicle Fitment:
Buick 2.8L V6:
- 1985–1986 Buick Century 2.8L V6
- 1985–1986 Buick Skylark 2.8L V6
Cadillac 2.8L V6:
- 1985–1986 Cadillac Cimarron 2.8L V6
Chevrolet 2.8L V6:
- 1985–1986 Chevrolet Camaro 2.8L V6
- 1985–1986 Chevrolet Cavalier 2.8L V6
- 1985–1986 Chevrolet Celebrity 2.8L V6
- 1985 Chevrolet Citation II 2.8L V6
Oldsmobile 2.8L V6:
- 1986 Oldsmobile Cutlass Ciera 2.8L V6
- 1985–1986 Oldsmobile Firenza 2.8L V6
Pontiac 2.8L V6:
- 1985–1986 Pontiac 6000 2.8L V6
- 1985–1988 Pontiac Fiero 2.8L V6
- 1985–1989 Pontiac Firebird 2.8L V6
Our Remanufacturing Process:
Each injector is professionally serviced and tested using our ASNU fuel injector equipment.
Every injector receives:
- Resistance/ohm testing
- Complete disassembly
- Ultrasonic cleaning
- Internal reverse flushing
- Leak testing
- Spray pattern verification
- Dynamic flow testing
- New seals installed
- Final quality inspection
Your injector will arrive cleaned, tested, and ready to install.
All orders are shipped within 1-2 business days from when payment is received.
Transit time varies based on service type requested:
First Class Mail: 3-7 business days
Priority Mail: 2-3 business days
Express Mail: 1-2 business days
Free Shipping options are generally First Class Mail.
For international shipments, make sure your address information is accurate. CS Performance assumes no liability once package leaves the United States. Please be sure your country is accepting packages from the US and you are aware of any duties or taxes your country may require upon package arrival.
Core Returns are completely optional and not required. When you order a set of fuel injectors from us, eligible part numbers will have a paper slip inside the shipping box. This paper slip will have all of the additional information regarding the return of your old cores for a varying price (depending on the part number you are looking to send in).
If your old cores are not eligible to be returned, you will not receive this paper slip within the shipping box, and no further action is required.
Thank you for your time and business, we appreciate it greatly!
