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- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2012-16
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.1 Turbo S 3.8L (560 Bhp) 2014-16
- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
Fits:
Porsche 996 - 1997 to 2005
Porsche 997 - 2005 to 2012
Porsche 991.1 - 2012 to 2016
Porsche 986 Boxster - 1997 to 2004
Porsche 987 Boxster / Cayman - 2005 to 2012
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99923904040
The product you are viewing cross references to these numbers
Porsche additional air valve exchange surcharge 911110273U, linked to reconditioned valve 911110273X for the listed 1977–80 Porsche 911 applications. It covers the surcharge only; the valve is a separate component.
Fits
Porsche 911 2.7 / 3.0 Carrera / 3.0 SC 1977–80
Check fitment for your specific vehicle (model, year, engine) before ordering.
What This Product Does
This surcharge is associated with the reconditioning exchange arrangement for valve 911110273X. The removed component is returned for inspection to establish its suitability for reconditioning.
The associated valve supplies extra intake air during starting and early engine warm-up in CIS/K-Jetronic applications. That mechanical function belongs to the valve, not to this surcharge.
Functions
- Identifies the surcharge associated with reconditioned valve 911110273X.
- Relates to the removed component’s return and inspection within the exchange arrangement.
Technical Details
- Exchange surcharge reference: 911110273U.
- Related reconditioned valve: 911110273X.
- Associated component: additional air valve, also called an auxiliary air valve.
- Related injection system: CIS/K-Jetronic.
- Exchange unit acceptance is subject to assessment of the returned component.
Symptoms of Fault
The following concerns relate to the associated valve rather than the surcharge: difficulty with cold starting, irregular idle as the engine warms, stalling after starting, or hesitant running before operating temperature is reached. These symptoms alone do not establish that the valve is faulty.
Why Replacement Matters
If the associated valve sticks or becomes restricted, the engine may receive unsuitable airflow during starting and warm-up. Investigate intake leaks and other CIS/K-Jetronic components before deciding to replace it, because similar running problems can have several causes.
This surcharge applies only when the relevant reconditioned exchange unit is ordered.
FAQs
Does this include a replacement valve?
No. It is the surcharge associated with the reconditioned component, not an additional valve.
Which reference identifies each item?
The valve carries reference 911110273X; 911110273U identifies its associated surcharge.
Are returned components automatically accepted?
No. The removed component requires inspection to determine whether reconditioning is appropriate.
What should be checked before ordering?
Compare the original valve’s reference with the associated replacement and verify the vehicle’s model, engine, production year and VIN where needed.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
911110273U
The product you are viewing cross references to these numbers