Includes gasflowing of both inlet & exhaust ports. Gasflowed cylinder head is intended to improve efficiency and fuel economy. In practice this manifests itself as improved response to the throttle and the ability to pull higher gears at lower rpm.
Late S111, early 90/110 - Fits late S111 2.25 5MB petrol engines from engine number 36123672B & 36407286B
NOTE: The above includes a £ 180.00 core charge which is refundable upon return of an exchange unit suitable for remanufacture