Shovel tappet block set front/rear. Black - 53-84 B.T. (NU). 53-E76 B.T. requires a special conversion mount kit 949219 The high velocity air flow

The high velocity air flow means a stronger vacuum at the needle jet for more precise metering

Use 11218 key (MCS 517951)

TÜV approval

Fits models with cork seals

adapters and plugs

Shovel tappet block set front/rear. Black - 53-84 B.T. (NU). 53-E76 B.T. requires a special conversion mount kit 949219 The high velocity air flowBlack painted steel. Reproduction part. Will fit all 53 84 Big Twin models but earlier 53 E76 model OEM screws do not have the flat base screws that are required for the late model tappet blocks. A special conversion screw set is required for 53 E76 models that will fit the different threads that are used in 53 E76 crankcases. (like 502990 allen head or 513555 acorn). Repl. 18602 80A rear and 18603 80A front tappet guides. Note: 53 E76 models require