






🔧 Upgrade your Duramax’s heartbeat with precision plugs that keep you running flawlessly!
The Saihisday Fuel Injector Connector Harness Plug is a pack of 8 universal replacement plugs designed specifically for 6.6L Duramax LLY and LBZ diesel engines. Made from durable metal and plastic with a stainless steel finish, each plug is factory-tested to ensure reliable repair of injector wiring harnesses, resolving common issues like power loss and electrical faults for a smooth, trouble-free engine performance.






















| Brand | Saihisday |
| Exterior Finish | Stainless Steel |
| Inlet Connection Size | 000 Inches |
| Inlet Connection Type | SAE |
| Item dimensions L x W x H | 3.93 x 1.18 x 5.9 inches |
| Material | Metal, Plastic |
K**H
Excellent Parts
Other than the wire being one gauge smaller than the original these work great. Cured my injector code! If you look at the terminals you can see what happens, see how dark the interior is of the one terminal? The other is farther away and you can still see down inside because it is shiny and good. The other picture is of the wiring all covered with heat reflecting tape.
C**E
Very good deal
Good quality, great price. Worked like a charm, thanks
M**.
Not a great deal
Very poor quality parts. Two set and not very many are usable.
J**N
Fix your Duramax and Save!
Great Price, easy to install and saved large $'s!
O**E
Smaller gauge, slight differences, but does the trick for a great price!
These worked to get my 2005 Duramax back on the road. You only really need #2 and #7, usually, but the dealer charges $60-80/EACH, so you really can't beat this set for the price! There were two differences from OEM: 1. The connectors on the wires are not attached to the inside the plug housing, so when you wiggle each wire, the connector at its end moves up and down. While disconcerting, this does NOT affect performance; once everything's lined up with the plug on the injector, it clicks into place and holds perfectly. 2. As a previous reviewer noted, the wire is lighter gauge. Looks to be about an 18, vs. the 14 for the OEM version. Note that you will need either solder or butt connectors, electrical tape, and plastic conduit to complete your repair.
R**R
I would recommend
2004 Duramax no issues great value for the money
A**N
Works
Worked as it should
C**S
Good but not oem
They look fine but the wire is very thin, seems to work from the videos i have seen but i'm worried about the jump to such a thin wire. They are only backups but nothing more tbh, id still want the factory connector in the long run.
Trustpilot
3 weeks ago
1 month ago