Sierra 23-1101 Air Filter for Westerbeke 39705
- Brand:
- Sierra
- Part no:
- 23-1101
Image: Powerboat Supply
Where to buy
View on Amazonpaid link
The Sierra 23-1101 is an air filter that replaces Westerbeke part 39705. The fitment list covers BTDA models at 8.0 and 10.0 on 60Hz and 6.0 and 7.5 on 50Hz. It is also listed for BTDB models at 12.5 and 9.4 and BTDC models at 15.0 and 12.0, each with its 60Hz or 50Hz rating.
Our take
The fitment here is by Westerbeke model and frequency: BTDA, BTDB and BTDC, each in 60Hz and 50Hz ratings. Check your engine's exact model and Hz against that list, and use number 39705 as the cross-check.