ACDelcoGM Original Equipment 55577403 Direct Fuel Injector Assembly
Details
- MaterialMetal
- BrandACDelco
- Item dimensions L x W x H2 x 4 x 2
- Exterior FinishMachined
- Inlet Connection Size1.5 Inches
- Inlet Connection TypeFlange
Description
⚡ Upgrade your GM ride with precision fuel delivery!
- COMPACT LIGHTWEIGHT - Small 3.52 oz unit fits perfectly without added bulk
- SEAMLESS COMPATIBILITY - Direct replacement for GM vehicles, no modifications needed
- DURABILITY YOU CAN TRUST - Machined metal finish built to last under pressure
- OPTIMIZED FUEL ATOMIZATION - Needle valve design maximizes fuel efficiency and power
- ENGINEERED FOR PEAK PERFORMANCE - Exact GM OE specs ensure flawless fit and function
The ACDelco GM Original Equipment 55577403 Direct Fuel Injector Assembly is a precision-crafted, metal fuel injector designed to meet exact GM OE specifications. Compact and lightweight, it ensures optimal fuel atomization and seamless compatibility as a direct replacement for GM vehicles, delivering reliable performance and durability engineered in Italy.
Specifications
| Material | Metal |
| Brand | ACDelco |
| Item dimensions L x W x H | 2 x 4 x 2 inches |
| Exterior Finish | Machined |
| Inlet Connection Size | 1.5 Inches |
| Inlet Connection Type | Flange |
| Outlet Connection Type | Flange |
| Number of Ports | 2 |
| Outlet Connection Size | 1.5 Inches |
| Specification Met | oe |
| Valve Type | Needle Valve |
| Global Trade Identification Number | 40808709381059 |
| Manufacturer | ACDelco |
| UPC | 808709381051 |
| Model | Fuel Injector |
| Item Weight | 3.52 ounces |
| Product Dimensions | 2 x 4 x 2 inches |
| Country of Origin | Italy |
| Item model number | 55577403 |
| Manufacturer Part Number | 55577403 |
| OEM Part Number | 55577403 |
Reviews
J**E
Works great
It was a perfect fit for my 2017 Chevy Cruze. Just like factory. It was a GM product
C**S
Best price, fastest shipping and good quality parts
I bought four and replacement them with the fuel rail. My 2017 chevy malibu is running great again no leaks. Amazon was able to sell them cheaper and ship them faster than. Auto zone, O'Reilly's, Napa and even rock auto! $80 each is what I paid for them in Feb of 2025. I will post an update for this review if I have any issues within the next year
K**Y
Worth the money
Works perfect.
D**.
Horrible
Not happy at all with this purchase. Item was used. Part number on box did not match part inside box. It was an important part I needed to fix my truck. Had to buy another one elsewhere.
P**L
Great replacement
Great replacement put it in solve the problems working like new recommended and most of all half the price of an auto parts store.
B**H
FACTORY PART
WAS IN A AC DELCO BOX BRAND NEW ALL SEALS IN PLACE EASY SWAP FIT PERFECT WITH NO PROBLEMS 100% RECOMMEND!!!
L**N
Shipping Issues
Fuel injector was a 5🤩 The shipping was fed failure. Messed up repair delivery date.
R**D
It worked.
Came in a genuine gm parts box. Looked exactly like the one I pulled from the car. Plugged it in and charged the fuel system. Fired first try. Best price around as well.
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