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BALDWIN · Engine Air Filter

RS4988

Radial Seal Air Element

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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.

Call Belleville ↗Call Kingston ↗Text your part number ↗

THE DETAILS THAT MATTER

FILTER SPECIFICATIONS.

Filter type
Radial Seal Air Element
Outside diameter
13 15/32 in.
Outside diameter (mm)
342.1
Inside diameter
8 5/32 in.
Length
15 17/32 in.
Length (mm)
394.5
Manufacturer part number
RS4988
GTIN
00791440076518

Baldwin replacement references: Caterpillar 165-1689

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 RS4988. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.

10 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
BALDWIN FILTERSRS49881
CARQUEST889181
CATERPILLAR16516891
DONALDSONP6062201
GRAINGER4XDC81
HASTINGSRS49881
NAPA GOLD69181
SAKURAA44071
WIX469181
WIX5469181

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.

Caterpillar D9R Crawler Tractor

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.