Sierra 18-4456 Exhaust Protector Valve
Price: $18.38
Save: $10.61
(36% Off $28.99)
Part # 18-4456
2nd Day Air for $4.99 More Eligible
Is this a 3 inch?
According to Sierra, this fits over a 3 inch valve. Meaning the I.D. of the part itself is a little larger than 3 inches.

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