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What is the purpose of exhaust springs on 3.1L V6 engine, chevy lumina 1995? on 1995 Chevrolet Lumina

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There are two springs with studs holding the exhaust pipe to the rear exhaust manifold. The studs are inside the springs. What are the purpose of these springs? can I use any springs for replacement? thank you for your reply.

(1) Answer
Flex joint for engine movement from torque! So if you had say a broken motor mount it has somewhere to flex or move without breaking stuff!!