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BALDWIN · Engine Oil Filter

OB1305

By-Pass Lube Filter Base

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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
By-Pass Lube Filter Base
Outside diameter
4 1/4 in.
Outside diameter (mm)
108.0
Length
2 3/4 in.
Length (mm)
69.9
Inlet
1/8 In. NPT
Outlet
1/8 In. NPT
Contains
Threaded Stud: 5/8-18
Use with
B50, B164, BT341
Manufacturer part number
OB1305
GTIN
00791440011779

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 OB1305. 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 FILTERSOB13051
BIG A FILTER967551
CARQUEST897551
FRAM FiltersKPB501
GRAINGER4ZMX11
LUBER-FINERLMB501
NAPA GOLD47551
NAPA X47551
WIX247551
WIX5247551

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.

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.