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BALDWIN · Engine Air Filter

RS3936

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.

THE DETAILS THAT MATTER

FILTER SPECIFICATIONS.

Filter type
Radial Seal Air Element
Outside diameter
9 9/32 in.
Outside diameter (mm)
235.7
Inside diameter
5 25/32 in.
Length
25 17/32 in.
Length (mm)
648.5
Manufacturer part number
RS3936
GTIN
00791440058903

Baldwin replacement references: Mack 2MD4139M, 57MD46M

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 RS3936. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.

26 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
AUTOMANN8316239361
BALDWIN FILTERSRS39361
BIG A FILTER943531
CARQUEST883531
CHAMPION LABORATORIESLAF86911
DONALDSONEAF51081
DONALDSONEPG110215Filter Only1
DONALDSONP5406541
DONALDSONP5407311
DONALDSONP6006761
FLEETGUARDAF256871
FLEETRITEAFR8256871
FRAM FiltersCA89321
GPCFC22021
GRAINGER2KZN11
HASTINGSAF23151
KRALINATORLA19211
LUBER-FINERLAF86911
MACK2MD4139MFilter Only1
MACK57MD46M1
MACK81SF281
NAPA GOLD63531
PHOENIXNA36101
PUROLATORA759111
WIX463531
WIX5463531

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.