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Baldwin B40127 Engine Oil Filter

Brand	Baldwin B40127
Contains	Anti-Drainback Valve;36 PSID By-Pass Valve
Fits	"2000-04 Audi A6 Series, 2002-03 S6 Series, all with V-8 4.2L Engine"
Height	7 15/32
Height (mm)	189.7
Integral Gasket	[1] Included
Outside Diameter 1	2 31/32
Outside Diameter 1 (mm)	75.4
Replaces	Volkswagen 77115561G; WIX 57172
Thread	M24 x 2.0
Fits	Audi · 7 vehicles

Anti-drainback valve. Helps keep oil in the filter when the engine is off.

By-pass valve. 36 PSID setting helps maintain oil flow under restriction.

Integral gasket included. Provides a ready-to-install sealing surface.

$29.86Free shipping

In stock · usually ships same day before 1pm CST

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Baldwin B40127 Engine Oil Filter for Audi V8 4.2L

The Baldwin B40127 is an engine oil filter built for select Audi V8 4.2L applications, including 2000-2004 Audi A6 Quattro and 2002-2003 Audi S6. It uses an anti-drainback valve and a 36 PSID by-pass valve to support oil flow control and filtration performance in the specified fitments.

Key Features

Engine oil filter for select Audi V8 4.2L engines
Contains an anti-drainback valve
Includes a 36 PSID by-pass valve
Integral gasket included
M24 x 2.0 thread specification
Outside diameter: 2 31/32 in. (75.4 mm)
Height: 7 15/32 in. (189.7 mm)
Replaces Volkswagen 77115561G and WIX 57172

Detailed Description

Baldwin B40127 is an OE-style engine oil filter for Audi A6 Quattro and Audi S6 models equipped with the 4.2L V-8 engine. The filter’s anti-drainback valve helps retain oil in the filter after shutdown, while the 36 PSID by-pass valve provides a controlled flow path when differential pressure rises. With the listed gasket included and the specified M24 x 2.0 thread, this filter is built to match the application details called out for these Audi platforms. This part number, B40127, is a direct replacement reference for Volkswagen 77115561G and WIX 57172.

What It Helps Address

Oil filter replacement for Audi A6 Quattro and Audi S6 V8 4.2L service intervals
Loss of oil retention after engine shutdown
Restricted oil flow caused by a loaded filter element
Maintenance needs tied to OE-number cross-reference replacement
Fitment concerns when matching thread, height, and diameter specifications

Installation Notes and Tips

Verify the engine is the 4.2L V-8 and confirm the OE number before installation. Check the sealing surface, replace the filter at the recommended service interval, and make sure the gasket seats evenly during installation. Confirm thread engagement and overall dimensions against the removed filter to ensure proper fit on the Audi A6 Quattro or Audi S6 application.

Quality Assurance

Baldwin manufactures filtration products for automotive service applications, and the B40127 is specified with the valve and dimensional details needed for the listed Audi fitments. Fits 2000-2004 Audi A6 Quattro and 2002-2003 Audi S6, both with the V-8 4.2L engine.

This part fits 7 vehicles

Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

Year	Make	Model	Liters	Cylinders	Position	Notes
2004	Audi	A6 Quattro	4.2L	V8	N/A	OE Number : 77115561G
2003	Audi	A6 Quattro	4.2L	V8	N/A	OE Number : 77115561G
2003	Audi	S6	4.2L	V8	N/A	OE Number : 77115561G
2002	Audi	A6 Quattro	4.2L	V8	N/A	OE Number : 77115561G
2002	Audi	S6	4.2L	V8	N/A	OE Number : 77115561G
2001	Audi	A6 Quattro	4.2L	V8	N/A	OE Number : 77115561G
2000	Audi	A6 Quattro	4.2L	V8	N/A	OE Number : 77115561G
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