BELLEVILLE APC
14 Roy Boulevard
Belleville, ON K8N 0L9
BF9921-OPhoto not yet available
BALDWIN · Fuel Water Separator Filter
BF9921-O
FWS Spin-on w/Open End for Bowl
Call for price
Call either store for your current price.
Belleville APCCall for availability
Kingston APCCall for availability
Stock checked September 11, 12:46 PM Eastern. Call before travelling so we can confirm what is still available.
THE DETAILS THAT MATTER
FILTER SPECIFICATIONS.
- Filter type
- Fuel/Water Separator Spin-on with Open End for Bowl
- Thread
- 1–14
- Outside diameter
- 4 1/4 in.
- Outside diameter (mm)
- 108.0
- Length
- 8 21/32 in.
- Length (mm)
- 219.9
- Contains
- Pre-Fill Cup;Integral Post Seal;Bowl Thread: 3 3/4-10
- Manufacturer part number
- BF9921-O
- GTIN
- 00791440094697
Baldwin replacement references: John Deere RE503676
Baldwin PIES August 20, 2026 · Baldwin Product Guide July 24, 2026.
START WITH THE NUMBER YOU HAVE
CROSS-REFERENCE NUMBERS.
Baldwin’s reference lists the numbers below for BF9921-O. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.
12 manufacturer reference rows
| Brand / manufacturer | Reference number | Condition / note | Reference qty |
|---|---|---|---|
| BALDWIN FILTERS | BF9921O | 1 | |
| CARQUEST | 86986 | 1 | |
| CARQUEST | 96547 | 1 | |
| GRAINGER | 36VX19 | 1 | |
| JOHN DEERE | RE503676 | 1 | |
| KNECHT | KC430D | 1 | |
| MAHLE | KC430D | 1 | |
| NAPA GOLD | 3986 | Others | 1 |
| NORTHERN LIGHTS/LUGGER | NLRE503676 | 1 | |
| SF-FILTER / SCHUPP | SK3725 | 1 | |
| WIX | 33986 | Others | 1 |
| WIX | 533986 | Others | 1 |
Source: Baldwin Specs & Interchange · July 27, 2026. Reference quantity is part of the manufacturer’s cross-reference, not store stock.
CHECK THE EQUIPMENT. CHECK THE ENGINE.
APPLICATIONS & EQUIPMENT.
John Deere Industrial, Marine Engines
Baldwin Product Guide summary. This description does not establish fit for every model from each manufacturer.
Call with your equipment model, engine and the number on the existing filter. Our counter will help verify the application.
A REAL COUNTER. CLOSE TO HOME.
YOUR LOCAL FILTER PEOPLE.
Bring the number off your old filter, or your equipment and engine details. We’ll help check the match.
KINGSTON APC
846 Portsmouth Avenue
Kingston, ON K7M 3C7