This is the cap that screws onto the test tube on the exhaust elbow before the catalytic converter. This outlet allows you to sniff the exhaust before the catalytic converter. When analyzing emissions to set mixture or diagnose a running issue, it can be helpful to read the exhaust readings before they are cleaned up by the catalytic converter. Sometimes this cap vibrates off so here is a replacement.
Ref ID: 4A0131737A
H-Pipe To Metal Coolant Pipe Hose 1.9L
Heavy Duty Tail Pipe
Tail Pipe 1.9L
Metal Coolant Pipe
Vanagon Tail Pipe Installation Kit
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Description
This is the cap that screws onto the test tube on the exhaust elbow before the catalytic converter. This outlet allows you to sniff the exhaust before the catalytic converter. When analyzing emissions to set mixture or diagnose a running issue, it can be helpful to read the exhaust readings before they are cleaned up by the catalytic converter. Sometimes this cap vibrates off so here is a replacement.
Ref ID: 4A0131737A
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Finish Your Project
Complete your install with the products below
H-Pipe To Metal Coolant Pipe Hose 1.9L
ID: 001388 In stock.MSRP:$14.95Add to Cart The item has been addedHeavy Duty Tail Pipe
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ID: 001389 Only 1 in stockMSRP:$71.95Add to Cart The item has been addedVanagon Tail Pipe Installation Kit
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