350 Horizon MPI FUEL INJECTOR O RINGS

• Feb 24, 2018

• #1

cfd95

Active Member

Nov 5, 2013

410

Northport Long Island

Boat Info

2002 310 Sundancer

Engines

350 Horizons
V Drives

I have to replace one injector on my starboard engine.
I want to replace the o rings on all the injectors since the fuel rails have to come out.
I can only find the mercruiser O rings for $11.00 and up for just 1. Thats insane.
New Injector comes with O Rings so I need 14 more.
Anyone know of any aftermarket O rings available.
Injector Part# 861260T
O Ring Part# 851889

 

• Feb 24, 2018

• #2

JohnGordon

Member

Jul 19, 2010

161

Traverse City, MI

Boat Info

1999 330 Sundancer, 7.4MPI, V-Drive, 4.5 Westerbeke, Raymarine A98, Full Camper Canvas, Vitracore-So

Engines

7.4MPI, V-Drive

Ask an injector cleaner/tester. My local guy gave me all new o-rings for free when he tested my injectors. They are a standard GM part and you could probably get them at any parts store.

 

• Feb 25, 2018

• #3

paulswagelock

Well-Known Member

Oct 25, 2010

2,194

pa

Boat Info

2018 SDX 270 OB 300 Verado

Engines

Verado 300

If you are pulling them all, why not get them cleaned and serviced. Only $10 or so per injector. They will replace all soft parts during the service.

 

• Feb 25, 2018

• #4

cfd95

Active Member

Nov 5, 2013

410

Northport Long Island

Boat Info

2002 310 Sundancer

Engines

350 Horizons
V Drives

Thanks for the replies.
I probably will have them flow tested its cheaper than buying the Mercruiser O Rings
Im only replacing one because the connector on the injector is broken.
I must have broken it doing the manifolds and risers.