Subarunet Announcement
To: All Subaru Retailers
From: Subaru of America, Inc.
Date: March 27, 2020
UPDATE: Owner Notification WUK-96 DIT Exhaust Pipe Front (EPF) Nut Torque Service
Campaign/Voluntary Emissions Recall
Owner Notification
Subaru notified the affected Forester vehicle owners by first class mail in phases throughout February.
Those notifications were mailed in conjunction with the WUT05 and WUM98 notifications for the same
affected vehicles.
The owner notification letters for affected WRX vehicles will be mailed next week.
Subaru of America, Inc. (Subaru) is initiating a service campaign/voluntary emissions recall for certain
2015-2018 Forester 2.0L Turbo and 2016-2018 WRX models which may experience a loosening of the
front exhaust pipe nuts.
Affected Vehicles
This recall will affect 93,796 vehicles.
Model Year
2015-2018
2016-2018

Carline
Forester XT
WRX

Affected Production Dates
5/11/2015-3/20/2018
5/09/2015-10/04/2017

Coverage for this campaign must be confirmed by using the Vehicle Coverage Inquiry function on
subarunet.com.
Background
On certain affected vehicles, the six (6) front exhaust pipe nuts at the cylinder heads may not have been
tightened sufficiently due to variations in production. As a result, these nuts may become loose during
use and cause exhaust leakage. A leak occurring at the front exhaust pipe may result in deterioration of
emission performance. As a result, affected vehicle may fail to meet emission levels certified by the EPA
and/or California ARB.
Description of the Remedy
Subaru retailers will inspect the 6 nuts securing the front exhaust pipe to the cylinder heads on all
affected vehicles. If any of the 6 nuts are found to be loose or lost and / or exhaust gas leakage is
identified at either of the connections to the cylinder heads, the retailer should replace the front
exhaust pipe.

Retailer Responsibility
Any vehicles listed in any recall/campaign that are in retailer stock must be:
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Immediately identified.
Tagged or otherwise marked to prevent their delivery or use prior to repair.
Repaired in accordance with the repair procedures outlined in the Product Campaign Bulletin.

Retailers are to promptly perform the applicable service procedures to correct all affected vehicles in
their inventory (used, demo & SSLP). Additionally, whenever a vehicle subject to this recall is taken into
retailer inventory necessary steps should be taken to ensure the recall correction has been made before
selling or releasing the vehicle.
Service, Parts, and Claim Instructions
For detailed service, parts, and claim information, please refer to the WUK-96 Service Program Bulletin
on STIS.