B&B RV Rear-Bumper Sewer Hose Caps: 94160–94163 Parts Guide

Many RVs use the hollow rear bumper as a storage space for a sewer hose. A cap keeps the hose inside the bumper, but the bumper opening and the cap's retaining design determine which replacement fits. B&B Molders lists four different black bumper plugs, including tab-retained, plain and barbed styles.

Compare the four bumper cap designs

How they differ

Tabbed caps: 94160 and 94161

These caps have molded retaining tabs. Choose between the manufacturer's 4-inch and 4¼-inch outside-dimension versions based on the original bumper opening and cap design. The extra quarter inch is meaningful; match the old part instead of assuming either size will stay in place.

Standard cap: 94162

B&B lists this as the removable 4-inch bumper plug without the separate tab-style designation. Compare the back of your existing cap and the way it grips the bumper before replacing a tabbed or barbed plug with this style.

Barbed cap: 94163

This 4-inch barbed design uses a different retaining profile. Check the shape and condition of the bumper opening so the cap can seat securely while remaining removable for sewer-hose access.

Compare actual product photographs

94160 — 4-inch tab-retained bumper cap

View 94160 product

94161 — 4¼-inch tab-retained bumper cap

View 94161 product

94162 — 4-inch plain bumper cap

View 94162 product

94163 — 4-inch barbed bumper cap

View 94163 product

Check the storage compartment

1. Measure the rear bumper opening and compare the original cap's outside size and retention shape.
2. Inspect for rust, deformation or sharp edges that could prevent a cap from seating.
3. Make sure the stored sewer hose and fittings do not push the cap out of place.
4. Confirm the cap remains securely retained before travelling.

Factory cap illustrations

The B&B Molders manufacturer parts catalog (PDF) includes the corresponding component illustrations and OEM reference numbers on printed page 62.

If the RV uses a separate sidewall sewer-hose hatch rather than a square rear bumper, see the B&B sewer storage hatch guide.