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Shop/Category/Fig. 11 — OIL TANK, SIDECOVERS, SILENCER/BSA Grommet, oil tank bottom mounting
BSA Grommet, oil tank bottom mounting
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DiagramFig. 11 — OIL TANK, SIDECOVERS, SILENCER · ref 46
Subsystemengine bottom
Listed in parts books1969–1970

BSA Grommet, oil tank bottom mounting

Rubber grommet for the bottom mounting point of the oil tank, cushioning it against the frame.

PN · 40-8401

This is the grommet that sits at the bottom mounting point of the oil tank, cushioning it against the frame where it bolts up. It's a small rubber piece but it does real work, keeping the tank from cracking against metal-to-metal contact and taking up vibration so the mount doesn't rattle loose over time.

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It shows up in the parts books alongside the oil tank, sidecovers, and silencer figures, which tells you it's part of that whole rear-of-the-engine assembly rather than something buried deep in the motor. The catalog data we have places it across 1969 and 1970 production.

If you're pulling the oil tank for a clean-up or repaint, it's worth checking this grommet at the same time — it's the kind of part that hardens or splits from age long before anyone notices, and a torn one lets the tank shift and eventually crack the mounting ear. Confirm your tank and frame mount configuration before ordering since fitment isn't spelled out beyond the catalog appearances we have on file.

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