Welch · Cover
S3040-99
Oil-Proofing Cover
Where to get it
No supplier lists this number with us yet. Ask for a quote and a specialist finds price and availability for you.
Prices are the supplier’s own, as last checked (date shown); they buy and ship. A price older than 30 days isn’t shown.
As printed in the source
66 | Oil-Proofing Cover | 1 | S3040-99 | S3040-99 | S3040-99
Fits 1 model
As listed by WelchWhen ordering, give the model and serial number from the nameplate: some parts changed within a model’s life.
Where it sits
In the CRVpro 4
9 · Exhaust box / oil reservoir
- Clamping cover705548-06
- Anti-Suck Back CoverS3020-99
- Pump CoverS3026-99
- Oil-Proofing CoverS3040-99
- Rear CoverS3050-99
Our drawing of the machine type, with the CRVpro 4's own parts; this part is highlighted. Side view along the shaft. Oil-free (dry) pumps have no exhaust box oil, sight glass or oil filter; their exhaust filter is a dust filter.
In the manufacturer’s drawings
- Position 66 · Exploded viewoperation manual crv pro 4 6 8, p. 16
Part number, name and fitment as published by Welch (source), retrieved 2026-10-19. Vac & Air is independent and not affiliated with the manufacturers shown; names and numbers identify the parts only.