This tappet guide block is fitted to the front and rear of the cylinder on all 350 and 500 unit construction twins up to 1963. Made in England by L F Harris to original Triumph drawings. I have been in the classic motorcycle trade for 40 years.
TRIUMPH BSA TAPPET GUIDE BLOCK O-RING (PR) - 70-7563
TRIUMPH PRE-UNIT EARLY UNIT TAPPET GUIDE BLOCK 1938-65 5T TIGER100 6T T120
70-1477 TRIUMPH 5T 6T T100 T120 TR6 1938-64 TAPPET GUIDE BLOCK E1477 UK MADE
TRIUMPH TWINS PAIR TAPPET GUIDE BLOCK LOCK BOLT/COPPER WASHER 97-0200 70-2441
70-4676 TRIUMPH 3TA 5TA T90 T100 T100SS 1964-68 TAPPET GUIDE BLOCK E4676 UK MADE
TRIUMPH 3TA 5TA T100A T120 TAPPET GUIDE BLOCK BOLT SCREW 97-0200 H200 UK MADE