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Wossner Pistons

Wossner Golf, A3, A4, A5 & TT 1.8 16v Turbo TFSI Low Comp Forged Piston Kit (K9507)

Golf, A3, A4, A5 & TT 1.8 16v Turbo TFSI Low Comp Forged Piston Kit.

Manufacturer kit reference: K9507

Technical specifications

Engine Code CDAA; CDAB; CDHB; CJEB;
YOM From 2006
YOM To 2017
Bore Size 82.5mm – K9507DA , 83mm – K9507D050
Stroke 84.1mm
Compression Height 29.3mm
OEM Comp Ratio 9.6:1
Number of Rings 3
OEM Rod Length 148mm
Clip Part Number CW21
Pin Size 21mm
Pin Part Number WP139-SP
Cylinders 4
Valves Per Cylinder 4

Piston specifications by size

Piston reference Piston diameter Compression ratio Capacity
K9507D050 82.93mm 9.26:1 1819cc
K9507DA 82.43mm 9.2:1 1797cc

Piston diameter and cylinder bore are different measurements. Select the correct size and confirm the engine specification before ordering.

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