BELLEVILLE STORE
14 Roy Boulevard
Belleville, ON K8N 0L9
RS4639Photo not yet available
BALDWIN · Engine Air Filter
RS4639
Radial Seal Inner Air Element
Call for price
Call either store for your current price.
Belleville StoreCall for availability
Kingston StoreCall for availability
Stock checked October 2, 11:37 AM 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
- 7 1/16 in.
- Outside diameter (mm)
- 179.4
- Inside diameter
- 5 11/16 in.
- Length
- 19 31/32 in.
- Length (mm)
- 507.2
- Contains
- Flame Retardant Media
- Manufacturer part number
- RS4639
- GTIN
- 00791440065512
Baldwin replacement references: Caterpillar 142-1403
Baldwin PIES August 20, 2026 · Baldwin Product Guide July 24, 2026.
START WITH THE NUMBER YOU HAVE
CROSS-REFERENCE NUMBERS.
Manufacturer catalogs list the references below for RS4639. GK Industries-supplied references are identified in the note column. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.
16 manufacturer reference rows
| Brand / manufacturer | Reference number | Condition / note | Reference qty |
|---|---|---|---|
| BALDWIN FILTERS | RS4639 | 1 | |
| CARQUEST | 93279 | 1 | |
| CATERPILLAR | 1421403 | 1 | |
| CATERPILLAR | 3109670 | Inner, Filter O | 1 |
| CATERPILLAR | 3244485 | Inner, Filter O | 1 |
| CATERPILLAR | 3244486 | Inner, Filter O | 1 |
| CATERPILLAR | 4395331 | Inner, Filter O | 1 |
| FIL FILTER | HP2585 | Flame Retardant | 1 |
| GRAINGER | 2NTW5 | 1 | |
| HASTINGS | AF2439 | 1 | |
| MANN+HUMMEL | CF181902 | Flame Retardant | 1 |
| NAPA GOLD | 6771FR | 1 | |
| NAPA X | 6771FR | 1 | |
| RADIALFIL | AS25468 | Flame Retardant | 1 |
| SANY | B222100000640 | Flame Retardant | 1 |
| WIX | 46771FR | 1 |
Sources: Baldwin Specs & Interchange · July 27, 2026; GK Industries PIES · August 21, 2026, where identified. Reference quantity is part of the manufacturer’s cross-reference, not store stock.
CHECK THE EQUIPMENT. CHECK THE ENGINE.
APPLICATIONS & EQUIPMENT.
Caterpillar Equipment
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 STORE
846 Portsmouth Avenue
Kingston, ON K7M 3C7