This is the OS Max #21427200 Exhaust Seal Ring.
Works for the OS 12TR Engines.
FEATURES: Made of a black rubber material.
Seals the area between the exhaust port to the exhaust
header (manifold).
Flanged in the front for a more secure seal.
INCLUDES: Two exhaust seal rings
SPECS: 9mm (.35") inside diameter
13mm (.50") outside diameter
dew 5/25/02
ir/kh
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