BBTV 2N4078 Engine Piston Ring

Brand BBTV 2N4078
1st Oil Groove 2
1st Oil Ring Material Steel rail/stainless exp
1st Oil Ring Surface Treatment Chrome
2nd Groove 1.5
2nd Ring Surface Treatment Phosphate
Cylinder Quantity 1
2nd Ring Material Ductile iron
Top Ring Material Stainless steel
Engborein 3.819
Engboremetric 97.00
Oversize Std
Top Groove 1.2
Top Ring Surface Treatment Nitride
Fits Mercedes-Benz · 74 vehicles

Standard size. Built for a 3.819-inch bore with the listed groove dimensions.

Surface-treated rings. Nitrided, chrome, and phosphate finishes support sealing and wear control.

Material mix. Uses stainless steel, ductile iron, and steel rail construction.

Cross-references 08-106300-01 and 113 030 03 24 for the same application. See all 2.

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Engine piston ring for Mercedes-Benz V8 applications

This engine piston ring is built around a 3.819-inch bore and standard size dimensions for specific Mercedes-Benz V8 applications. It uses a nitrided top ring, chrome-treated oil ring, and phosphate-treated second ring to match the listed groove specifications and ring materials.

Key features

  • Standard size piston ring set for a 3.819-inch bore
  • Nitrided top ring for added surface durability
  • Steel rail and stainless expansion oil ring construction
  • Chrome-treated first oil groove and phosphate-treated second ring surface
  • Fits Mercedes-Benz G500, ML500, E500, S500, and related applications

Detailed description

Part number 2N4078 is an engine piston ring designed for Mercedes-Benz applications that use a 97.00 mm bore and the listed groove dimensions. The ring package combines stainless steel, ductile iron, and steel rail materials to support the cylinder sealing and oil control requirements of the engine. Fitment includes Mercedes-Benz G500, ML500, E500, S500, SL500, E55 AMG, and other listed models across the 1998-2008 range. Part number 2N4078 is also cross-referenced to Monroe Shocks & Struts 08-106300-01 and 113 030 03 24 for the same application.

What this part is used for

  • Restoring cylinder compression when ring wear has increased blow-by
  • Addressing oil consumption caused by worn or damaged rings
  • Replacing rings that no longer match the specified bore and groove dimensions
  • Correcting sealing issues during engine rebuild or overhaul work

Installation notes and tips

Verify bore size, groove width, and engine application before installation. The listed fitment includes multiple Mercedes-Benz models with different year ranges, so confirm the exact engine configuration against the vehicle and the notes provided. Clean ring grooves thoroughly and inspect cylinder condition before assembly.

Quality assurance

Use the listed dimensions and material specifications to confirm proper application before installation. Part number 2N4078 is specified for the fitments shown and should be matched carefully to the engine bore and groove measurements.

This part fits 74 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelSubmodelLitersCylindersFuel TypeNotes
2008Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2008Mercedes-BenzG55 AMG—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2008Mercedes-BenzR500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2007Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2007Mercedes-BenzML500————EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2007Mercedes-BenzR500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzCL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzCLK500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzCLS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzE500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzML500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzR500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzS350—3.7LV6—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2006Mercedes-BenzSL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzCL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzCLK500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzCLS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzE500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzE55 AMG—5.4LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzML350—3.7LV6GASTop Ring Surface Treatment: Nitride
2005Mercedes-BenzML500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2005Mercedes-BenzSL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzCL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzCLK500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzCLK55 AMG—5.4LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzE500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzE55 AMG—5.4LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzML350—3.7LV6GASTop Ring Surface Treatment: Nitride
2004Mercedes-BenzML500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2004Mercedes-BenzSL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzCL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzCLK500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzCLK55 AMG—5.4LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzE500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzE55 AMG—5.4LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzML350—3.7LV6GASTop Ring Surface Treatment: Nitride
2003Mercedes-BenzML500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzML55 AMG—5.4LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2003Mercedes-BenzSL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzCL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzE500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzE55 AMG—5.4LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzML500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzML55 AMG—5.4LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzSL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2002Mercedes-BenzSL55 AMG—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2001Mercedes-BenzCL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2001Mercedes-BenzCLK55 AMGBase5.5LV8GASTop Ring Surface Treatment: Nitride
2001Mercedes-BenzE55 AMG—5.5LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2001Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2001Mercedes-BenzML55 AMG—5.5LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2001Mercedes-BenzS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2001Mercedes-BenzSL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2000Mercedes-BenzE55 AMG—5.5LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2000Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2000Mercedes-BenzS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
2000Mercedes-BenzSL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
1999Mercedes-BenzE430—4.3LV8GASTop Ring Surface Treatment: Nitride
1999Mercedes-BenzE55 AMG—5.5LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
1999Mercedes-BenzG500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
1999Mercedes-BenzS500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
1999Mercedes-BenzSL500—5.0LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
1998Mercedes-BenzE430—4.3LV8GASTop Ring Surface Treatment: Nitride
1998Mercedes-BenzE55 AMG—5.5LV8—EngBoreIn:3.819;Top Groove:1.20 mm;2nd Groove:1.50 mm;1st Oil Groove:2.00 mm;Standard Size;Nitrided Top Ring;1Cyl Ring Set; Top Ring Surface Treatment: Nitride
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
08-106300-01113 030 03 24