Baldwin B40138

BALDWIN · Engine Oil Filter

B40138

Lube Spin-on

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Call either store for your current price.
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Stock checked October 2, 11:37 AM 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
Lube Spin-on
Thread
1 1/2–12
Outside diameter
4 21/32 in.
Outside diameter (mm)
118.3
Length
4 15/16 in.
Length (mm)
125.4
Contains
20 PSID By-Pass Valve
Manufacturer part number
B40138
GTIN
00791440115729

Baldwin replacement references: Isuzu 2946541000, 2906542700

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 B40138. 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.

7 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
BALDWIN FILTERSB401381
CARQUEST953231
FLEETGUARDLF175381
GRAINGER56DZ861
ISUZU29065427001
ISUZU29456110001
ISUZU29465410001

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.

Isuzu NPR, NQR 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.