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Technical Information

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WE21 - Replacing Front Wheel Housing Liner (front part) (Workshop Campaign)

Revision:

Revision 1: June 18, 2014
This revision amends WE21 Parts Information regarding reuse of air guides; and amends/expands
Sections 2.5 and 2.6 in Attachment "A": Work Procedure.
Revision 2: August 12, 2014
This revision amends WE21 by adding VINs for U.S. vehicles in addition to VINs for Canada and Puerto
Rico.

Model Year:

2014

Vehicle Type:

911 GT3 (991)

Concerns:

Front wheel housing liner (front part)

Information:

This is to inform you of a voluntary Workshop Campaign on the above-mentioned vehicles. When
reversing out of the bed of gravel with hot tires during race track driving, small stones that are
sticking to the front tires can become loose.
These stones are flung against the radiators through an opening in the front part of the wheel housing
liners and can damage the radiators.

Action
Required:

Replace front wheel housing liners (front part).

Affected
Vehicles:

The VIN(s) can be checked by using PIWIS Vehicle Information link to verify if the campaign affects the
vehicle. This campaign is scope specific to the VIN! Failure to verify in PIWIS may result in an improper
repair. THIS CAMPAIGN AFFECTS 379 VEHICLES IN NORTH AMERICA.

Parts Info:

NOTE: DO NOT ORDER PARTS. THEY WILL BE AUTOMATICALLY ALLOCATED TO YOUR DEALERSHIP.
Part No.

Designation

Qty.

991.504.949.00

 Front left wheel housing liner – front part

1 ea.*

991.504.950.00

 Front right wheel housing liner – front part

1 ea.*

* Modified front parts of the front wheel housing liners are fitted during the campaign. The lower air
guides on the wheel housing liners must be re-used after removing the old wheel housing liners and must
then be fitted on the new wheel housing liners.

2014© Porsche Cars North America, Inc.

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Nr.49-1 - Torx screw tool set
VAS 6494 - Torque screwdriver (1.5 – 3 Nm/1 – 2 ftlb.)

Tools:

•
•

Work
Procedure:

See Attachment “A”.

Claim
Submission:

See Attachment “B”.

Installation
Position:

1
2

Front wheel housing liner
– Front part of front wheel housing liner – must be replaced
– Rear part of front wheel housing liner

Attachment "A": Work Procedure
1

Raise the vehicle on a lifting platform  Workshop Manual '4X00IN Lifting the vehicle'.

2

Replace front part of front left wheel housing liner.
2.1

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Turn the front wheels fully to the left.

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Service

Technical Information
2.2

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Unscrew and remove fastening screws  Air
vane -1- on the air vane  Air vane -2-, if it is
already fitted.

Air vane
2.3

Unscrew and remove fastening screws 
Front wheel housing liner - front part -2- on
the front part of the wheel housing liner 
Front wheel housing liner - front part -1-.

2.4

Guide front part of wheel housing liner 
Front wheel housing liner - front part -1- out
of the wheel housing and off the rear part of
the wheel housing liner and remove it.

Front wheel housing liner - front part
Information

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The air guide on the front part of the front wheel housing liner must be re-used during this
campaign.
2.5

3

Remove air guide on the front part of the old
wheel housing liner at the front left.
2.5.1

Loosen, unscrew and remove
fastening screws  Converting
air guide -3- on the air guide 
Converting air guide -2-.

2.5.2

Remove air guide  Converting air
guide -2- from the front part of the
wheel housing liner  Converting
air guide -1-.

2.5.3

Dispose of front part of the old front
wheel housing liner (without the
grille).

2.6

Position the air guide you removed earlier
 Converting air guide -2- on the new
front part of the front wheel housing liner
Converting air guide
 Converting air guide -1-, Porsche part
number 991.504.949.00, and secure it with the fastening screws  Converting air guide
-3-.
Tightening torque 3 Nm (2 ftlb.)

2.7

Guide new front part of front left wheel housing liner into the wheel housing and place it in
installation position.

2.8

Screw in and tighten fastening screws  Front wheel housing liner - front part -2- on the front
part of the wheel housing liner  Front wheel housing liner - front part -1-.
Tightening torque 2.7 Nm (2 ftlb.) +/-0.2 Nm (+/-0.1 ftlb.)

2.9

Align the air vane  Air vane -2- in the wheel
housing and secure it with the fastening
screws  Air vane -1-.
Tightening torque 3 Nm (2ftlb.)

Replace front part of front right wheel housing liner.
3.1

Turn the front wheels fully to the right.

3.2

Remove front part of right wheel housing liner
and install new front part of wheel housing
liner, Porsche Part No. 991.504.950.00.
To do this, complete Steps 2.2 to 2.7 on the
right side of the vehicle.

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Air vane

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4

Move the front wheels to the straight-ahead position and remove the vehicle from the lifting platform.

5

Enter the workshop campaign in the Warranty and Maintenance booklet.

Information
The specified working time was determined specifically for carrying out this campaign and may differ
from the working times published in the Labor Operation List in PIWIS.
Attachment "B": Claim Submission - Workshop Campaign WE21
Warranty claims should be submitted via WWS/PQIS.
Open campaigns may be checked by using either the PIWIS Vehicle Information system or through PQIS
Job Creation.
Labor, parts, and sublet will be automatically inserted when Technician is selected in WWS/PQIS. If
necessary, the required part numbers will need to be manually entered into warranty system by the dealer
administrator.
Working time:
Labor time: 38 TU

Replacing front wheel housing liner (front part)
Includes:
Raising the vehicle on a lifting platform
Loosening and securing air vane for brake disc
Replacing front part of front wheel housing liner at the left
and right
Parts required:
991.504.949.00

Front left wheel housing liner – front part

1 ea.

991.504.950.00

Front right wheel housing liner – front part

1 ea.

 Damage code WE21 066 000 2
References:

 Workshop Manual '4X00IN Lifting the vehicle'

Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. If a particular condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your authorized Porsche Dealer for the latest information
about whether a particular technical bulletin applies to your vehicle. Part numbers listed in these bulletins are for reference only. Always check with your authorized Porsche dealer to verify the current and
correct part numbers. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS
Tester are the ones that must be followed.
© Porsche Cars North America, Inc.

Dealership
Distribution
Routing

Service Manager

_______

Shop Foreman

_______

Service Technician

________

_______

_______

_______

Asst. Manager

_______

Warranty Admin.

_______

Service Technician

________

_______

_______

_______

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