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BALDWIN · Engine Air Filter

RS4577

Radial Seal Inner 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, 2:46 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 Inner Air Element
Outside diameter
8 1/8 in.
Outside diameter (mm)
206.4
Inside diameter
6 1/8 in.
Length
10 9/16 in.
Length (mm)
268.3
Manufacturer part number
RS4577
GTIN
00791440062887

Baldwin replacement references: Case 294293A1

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 RS4577. 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 / manufacturerReference numberCondition / noteReference qty
BALDWIN FILTERSRS45771
CARQUEST831521
CASE294293A11
FLEETGUARDAF257011
FLEETRITEAFR8257011
GRAINGER4RFN81
HASTINGSAF23411
JURA (HIFI)SA163301
MEGAFIL FILTROSPA257011
NAPA GOLD91521
NAPA X91521
NELSON870575N1
TBFILAD88451
VOXHDS5761
WIX491521
WIX5491521

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 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.