Jabsco 18712-0000 Retaining Ring
The Jabsco 18712-0000 is a genuine Jabsco retaining ring — the spring-steel circlip that locks the ball bearing into the pump assembly. It is a small, cheap part that does a job nothing else in the pump can do: it stops the bearing, and therefore the whole rotating assembly, from walking out of position under load.
Get this wrong and the consequences are quick. If the ring is missing, sprung, or has lost its tension, the bearing creeps in its housing, the shaft moves axially, and the impeller starts rubbing the cam and wearplate. What began as a two-dollar circlip turns into a new impeller, a scored wearplate and a leaking seal.
This ring is the bearing-to-body retaining ring — it sits in the pump body and holds the bearing outer race in place. It is listed by Jabsco for Jabsco 6400 Series engine cooling pumps, Jabsco 7420 Series pumps and Jabsco 11870 Series clutch pumps. Jabsco uses several different retaining ring sizes across its pump range, so if your pump is not on that list, check the part number against your pump’s own parts list before ordering.
Rings are cheap insurance on a rebuild. Fit a new one whenever you replace the bearing — a ring that has been sprung open and closed once already has lost some of its grip, and refitting a tired circlip into a freshly rebuilt pump is a false economy.
Key Features
- Genuine Jabsco (Xylem) service part — correct size and temper for the groove
- Spring steel circlip that positively locates the ball bearing
- Holds shaft and impeller running clearances where they belong
- Inexpensive part to renew during any bearing change or rebuild
- Direct replacement — fit with circlip pliers, no modification
Applications
- Jabsco 6400 Series engine cooling pumps
- Jabsco 7420 Series pumps
- Jabsco 11870 Series clutch pumps
- Flexible impeller pump bearing replacement and rebuilds
- Marine engine raw water cooling pump service
Specifications
- Brand: Jabsco (Xylem)
- Manufacturer Part Number: 18712-0000
- Part Type: Bearing retaining ring (circlip)
- Position: Bearing to body
- Sold As: Each
- Condition: New
Frequently Asked Questions
Q: Is this a genuine Jabsco part?
Yes, this is a genuine Jabsco retaining ring, not an aftermarket substitute.
Q: How do I know which retaining ring I need?
Compare this part number to the number on your pump's parts diagram, or send us a picture of the part you are replacing so we can confirm.
Q: When should this ring be replaced?
Replace it whenever it is removed during a bearing or seal service, since a ring that has been sprung open or shows wear may not seat as securely the second time.
Q: Does this fit more than one Jabsco pump model?
Retaining rings of this type are often shared across several Jabsco pump series, so check your pump's own parts list or send us your model number to confirm exact fitment.
Not sure this is the right part? Send us a Picture of the Pump Plate on your pump and the CLR Marine team will confirm the correct retaining ring.
CLRMarine
