RETAINER, SPRING, 1 PIECE TYPE, ALLOY, LOW
Part Number 543-70520135/A
ONE PC. DOES ONE SHOCK, GOOD REPLACEMENT FOR 2PC TYPE.
According to Hagon, "These are used for fine tuning of shocks, as they increase spring preload a bit more than the standard thin stainless upper collar 543-64546048, which replaces the old Hagon/Girling 2 piece steel spring collars. Except for the Nitros, all the Hagon spring collars and Girling ones interchange 2 piece, 1 piece, alloy, steel, for use with slimline and wideline springs."