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BALDWIN · Engine Air Filter

RS4618

Radial Seal Air Element

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Call either store for your current price.
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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
11 3/8 in.
Outside diameter (mm)
288.9
Inside diameter
5 13/16 in.
Length
20 13/32 in.
Length (mm)
518.3
Contains
Drainage hole in bottom.
Manufacturer part number
RS4618
GTIN
00791440064386

Inside-Out Flow Direction

Baldwin replacement references: Mack 57MD317

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 RS4618. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.

14 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
BALDWIN FILTERSRS46181
CARQUEST883481
DONALDSONA130115Filter Only1
DONALDSONP5449501
FLEETGUARDAF264171
FRAM FiltersCA98701
GRAINGER2TCZ41
HASTINGSRS46181
LUBER-FINERLAF46181
MACK2MD4140Filter Only1
MACK57MD3171
NAPA GOLD63481
PUROLATORA759891
WIX463481

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.

Mack Trucks

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.