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BALDWIN · Engine Coolant Filter

BW5201

Controlled Release Coolant Spin-on with BTE Formula

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Call either store for your current price.
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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
Controlled Release Coolant Spin-on with BTE Formula
Thread
3/4–20
Outside diameter
3 11/16 in.
Outside diameter (mm)
93.7
Length
5 3/8 in.
Length (mm)
136.5
Contains
Flow Control Orifice that meters flow of coolant through filter to allow coolant additives to be released in the amount required to maintain proper system balance for up to 150,000 miles of service.
Gasket
G381-A
Manufacturer part number
BW5201
GTIN
00791440057401

Baldwin replacement references: Nalcool NF2089, NF2089-1, NFC2089

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 BW5201. Keep any size, quantity or application conditions with the match. A cross-reference alone does not confirm fit on your equipment.

8 manufacturer reference rows

Brand / manufacturerReference numberCondition / noteReference qty
BALDWIN FILTERSBW52010
BARS FILTER35111
CARQUEST965251
FLEETGUARDWF21331
GRAINGER4ZPU51
NALCOOLNF20891
NALCOOLNF208911
NALCOOLNFC20891

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.

Applications Using a "Controlled Release" Coolant Additive

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.