BELLEVILLE APC
14 Roy Boulevard
Belleville, ON K8N 0L9
RS3721Photo not yet available
BALDWIN · Engine Air Filter
RS3721
Radial Seal Inner Air Element
Call for price
Call either store for your current price.
Belleville APCCall for availability
Kingston APCCall for availability
Stock checked September 11, 1:46 PM Eastern. Call before travelling so we can confirm what is still available.
THE DETAILS THAT MATTER
FILTER SPECIFICATIONS.
- Filter type
- Radial Seal Inner Air Element
- Outside diameter
- 8 5/16 in.
- Outside diameter (mm)
- 211.1
- Inside diameter
- 6 1/32 in.
- Length
- 20 31/32 in.
- Length (mm)
- 532.6
- Manufacturer part number
- RS3721
- GTIN
- 00791440052468
Baldwin replacement references: Steiger 90-8301T1
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 RS3721. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.
18 manufacturer reference rows
| Brand / manufacturer | Reference number | Condition / note | Reference qty |
|---|---|---|---|
| BALDWIN FILTERS | RS3721 | 1 | |
| BIG A FILTER | 94787 | 1 | |
| CARQUEST | 88787 | 1 | |
| CASE | 908301T1 | 1 | |
| CHAMPION LABORATORIES | LAF8689 | 1 | |
| DONALDSON | P536529 | 1 | |
| FLEETGUARD | AF25467M | 1 | |
| FLEETRITE | AFR825467M | 1 | |
| GPC | FC916 | 1 | |
| GRAINGER | 4XAA9 | 1 | |
| HASTINGS | RS3721 | 1 | |
| JURA (HIFI) | SA16483 | 1 | |
| LUBER-FINER | LAF8689 | 1 | |
| NAPA GOLD | 6787 | 1 | |
| PHOENIX | NA3529B | 1 | |
| STEIGER | 908301T1 | 1 | |
| WIX | 46787 | 1 | |
| WIX | 546787 | 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.
Case-International, Steiger Tractors
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