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Front Bumper Cover aero stuff - is it missing?

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8 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHFront Bumper Cover aero stuff - is it missing?

Leading reported evidence

Install center radiator exhaust vent

Performed · outcome unconfirmed

No successful repair reported for this finding.

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Unsuccessful attempts
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

I just installed the center radiator exhaust vent, and that rubber is clearly intended to create a low pressure area in front of the outlets.

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Front Bumper Cover aero stuff - is it missing?
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Leading evidence: 'Install center radiator exhaust vent' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install center radiator exhaust vent' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

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1 matching discussions · 8 captured posts examined · 0 partial discussions

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Install there

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

My '04 C2 Cab has these slots under the front bumper cover and evidence that there was something installed there.

Original post Read captured discussion
Front Bumper Cover aero stuff - is it missing?
Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Install center radiator exhaust vent

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

I just installed the center radiator exhaust vent, and that rubber is clearly intended to create a low pressure area in front of the outlets.

Original post Read captured discussion
Front Bumper Cover aero stuff - is it missing?

Install there

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

My '04 C2 Cab has these slots under the front bumper cover and evidence that there was something installed there.

Original post Read captured discussion
Front Bumper Cover aero stuff - is it missing?
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

8 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T075545Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

My '04 C2 Cab has these slots under the front bumper cover and evidence that there was something installed there. I found what appears to be the right piece for this in the parts diagram but it says it is for a C4S...??? So, should my car have some rubber "fins" or something attached to these slots? Is the parts diagram incorrect about the part being C4S only?

POST 2Original post

That's where the airflow from the center radiator exits.

POST 3 / ORIGINAL POSTEROriginal post

Just to clarify, I am talking about the narrow slots that are all the way across the front.

POST 4Original post

My '03 C2 Coupe has the same slots with nothing in them.

POST 5Original post

those are for a small rubber splitter,ill try to get the part #

POST 6 / ORIGINAL POSTEROriginal post

Quotes source post: 12701424

When I had the PPI done on this car they noted some rubber or plastic flow thing was missing in the front and this is the only place I can think of where it might have been. I hate unsolved mysteries so thanks for any help on this.

POST 7Original post

Quotes source post: 12701424

Randy, If you can get the PN, that would be fantastic. I just installed the center radiator exhaust vent, and that rubber is clearly intended to create a low pressure area in front of the outlets.

POST 8 / ORIGINAL POSTEROriginal post

I found an item that looks like it could fit in these slots. It is p/n 996 575 161 01 but this is the part that is noted "C4S". So do all 996s have these slots like mine? And doesn't anyone have a car with something fitted in this area? I am tempted to try to order this piece just to see if it will fit but there should be a more certain solution. UPDATE Just found this on RennTech; http://www.renntech.org/forums/topic...-mistery-part/

This is a source reference. Confirm exact model applicability in the original material.