NHTSA ID Number: 11031943
Manufacturer Communication Number: LI4910-N-060969
TSB/Document Date: 2026-05-02
Summary
Complaint Rattling noise from underneath the vehicle. Cause One or more of the following conditions may be present: 1. The exhaust bracket from the DPF to the transmission is cracked or broken. • See Pic. 1 for an example of a broken bracket. 2. Transmission bell housing cracked or broken at the exhaust mounting area. • See Pic. 2 for an example of bell housing damage. 3. Exhaust bracket from DPF to engine (cylinder crankcase) cracked or broken. • See EPC OM651 #217 for bracket location. 4. Diesel Particulate Filter (DPF) pipe cracked at a weld joint. • Cracking may be present at bracket welds or along the DPF housing seams. • This can cause rattling noises and secondary exhaust bracket stress. • Perform a visual inspection of the DPF pipe and weld joints. Remedy Inspect all related components and repair or replace as required. Inspection and Repair 1. Inspect the exhaust bracket from the DPF to the transmission. • Check the bracket for cracks or complete separation. • See Pic. 1 for a failed example. • See EPC OM651 #550 and Pic. 3 for bracket location. • If damaged, replace the bracket. • See Pic. 4, Pic. 5, and Pic. 6 for the updated bracket design and identification. 2. Inspect the transmission bell housing. • Inspect the bell housing at the exhaust mounting point for cracks or structural damage. • See Pic. 2 for an example of bell housing damage. • Replace the transmission if damage is confirmed. 3. Inspect the exhaust bracket from the DPF to the engine (cylinder crankcase). • Inspect the bracket for cracks or broken mounting points. • See EPC OM651 #217 for bracket location. • Replace the bracket if damaged. 4. Inspect the DPF pipe. • Inspect the DPF for cracks at weld joints, especially near mounting points. • If cracking is found, replace per current aftertreatment guidelines. Correct positioning and tightening of the exhaust system are critical to prevent repeat failures. Positioning the Exhaust System 1. Position and align the exhaust system before tightening. • Support and fit the exhaust system in its installed position. • Push the exhaust system forward. • Install the DPF‑to‑transmission bracket and lightly tighten the mounting bolt. • Install the engine mount and V‑mount bolts by hand, approximately two turns. • See “Positioning of the exhaust system” image. Tightening Sequence 1. Tighten the exhaust system in the correct sequence. • Tighten engine mounting bolts to 25 Nm. • Tighten V‑mount bolts to 25 Nm. • Tighten exhaust bracket bolts to 15 Nm. • See “Tightening sequence of the exhaust system” image. 2. Verify mounting bolt locations. • Confirm correct mounting screw positions at the transmission bracket. • See Pic. 7 and Pic. 8 for mounting screw locations.
OM651 Exhaust Bracket Cracking
Topic number
LI49.10-N-060969
Version
7
Function group
49.10 - Exhaust pipes, mufflers
Date
4/17/26
Validity
Sprinter with engine OM651
Reason for change
Validity Update
Complaint
Rattling noise from underneath the vehicle.
Cause
One or more of the following conditions may be present:
1. The exhaust bracket from the DPF to the transmission is cracked or broken.
• See Pic. 1 for an example of a broken bracket.
2. Transmission bell housing cracked or broken at the exhaust mounting area.
• See Pic. 2 for an example of bell housing damage.
3. Exhaust bracket from DPF to engine (cylinder crankcase) cracked or broken.
• See EPC OM651 #217 for bracket location.
4. Diesel Particulate Filter (DPF) pipe cracked at a weld joint.
• Cracking may be present at bracket welds or along the DPF housing seams.
• This can cause rattling noises and secondary exhaust bracket stress.
• Perform a visual inspection of the DPF pipe and weld joints.
Attachments
File
Description
Pic 1.jpg
Broken exhaust bracket to transmission
Pic 2.JPG
Transmission bell housing cracked
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© Copyright Mercedes-Benz
AG
CCUSHWA
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Remedy
Inspect all related components and repair or replace as required.
Inspection and Repair
1. Inspect the exhaust bracket from the DPF to the transmission.
• Check the bracket for cracks or complete separation.
• See Pic. 1 for a failed example.
• See EPC OM651 #550 and Pic. 3 for bracket location.
• If damaged, replace the bracket.
• See Pic. 4, Pic. 5, and Pic. 6 for the updated bracket design and identification.
2. Inspect the transmission bell housing.
• Inspect the bell housing at the exhaust mounting point for cracks or structural damage.
• See Pic. 2 for an example of bell housing damage.
• Replace the transmission if damage is confirmed.
3. Inspect the exhaust bracket from the DPF to the engine (cylinder crankcase).
• Inspect the bracket for cracks or broken mounting points.
• See EPC OM651 #217 for bracket location.
• Replace the bracket if damaged.
4. Inspect the DPF pipe.
• Inspect the DPF for cracks at weld joints, especially near mounting points.
• If cracking is found, replace per current aftertreatment guidelines.
Correct positioning and tightening of the exhaust system are critical to prevent repeat failures.
Positioning the Exhaust System
1. Position and align the exhaust system before tightening.
• Support and fit the exhaust system in its installed position.
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© Copyright Mercedes-Benz AG
CCUSHWA
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• Push the exhaust system forward.
• Install the DPF‑to‑transmission bracket and lightly tighten the mounting bolt.
• Install the engine mount and V‑mount bolts by hand, approximately two turns.
• See “Positioning of the exhaust system” image.
Tightening Sequence
1. Tighten the exhaust system in the correct sequence.
• Tighten engine mounting bolts to 25 Nm.
• Tighten V‑mount bolts to 25 Nm.
• Tighten exhaust bracket bolts to 15 Nm.
• See “Tightening sequence of the exhaust system” image.
2. Verify mounting bolt locations.
• Confirm correct mounting screw positions at the transmission bracket.
• See Pic. 7 and Pic. 8 for mounting screw locations.
Attachments
File
Description
EPC OM651 exhaust.JPG
EPC parts description
Pic 3.jpg
Location of DPF to Transmission bracket
Pic 4.JPG
DPF bracket to transmission has extra hole for mounting
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© Copyright Mercedes-Benz AG
CCUSHWA
Page 3 / 6
Pic 5.JPG
DPF bracket to transmission has extra hole for mounting
see part number
Pic 6.JPG
DPF bracket to transmission rear view
Pic 7.JPG
Location of mounting screws
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© Copyright Mercedes-Benz AG
CCUSHWA
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Pic 8.JPG
Loaction of mounting screws view 2
Positioning of the exhaust system.JPG
Positioning of the exhaust system
Tightening sequence of the exhaust system.JPG
Tightening sequence of the exhaust system
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© Copyright Mercedes-Benz AG
CCUSHWA
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Disclaimer
NOTE: The information contained in this document is intended for use by trained, professional technicians with the
knowledge to properly and safely perform diagnosis and repairs on Mercedes-Benz vehicles, using Mercedes-Benz
approved tools and equipment. It informs service technicians about conditions that could occur in certain vehicles and
provides information that could assist in proper vehicle diagnosis, service, or repair. It does not indicate that a defect
is present in any vehicle referenced in this document nor does it imply warranty coverage. DO NOT assume that a
symptom or condition, or a described cause of a symptom or condition, affects any particular vehicle or groups of vehicles, or that a described repair applies to any particular vehicle or groups of vehicles. There can be multiple causes
resulting in the same or similar symptoms or conditions described in this document, and trained professional service
technicians must use their diagnostic skills to make evaluations on a case-by-case basis. The information contained
in this document does not guarantee warranty coverage nor does it extend the vehicle’s warranty in any way.
Symptoms
Power generation > Exhaust system > Noises > Noise
Parts
Part number
ES1 ES2 Designation
Quantity Note
EPC
A9064921200
Exhaust bracket 4x2
1
New DPF Bracket to transmission
X
A9064921300
Exhaust Bracket 4x4
1
New DPF Bracket to transmission
X
N000000000276
Hex Bolt M8x20
1
Additional screw needed for New
DPF bracket to transmission
X
A9064920842
Bracket exhaust system at cyli- 1
der crankcase
X
Operation numbers/damage codes
Op. no.
Operation text
496960
REPLACE BRACKET
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© Copyright Mercedes-Benz AG
Time
Damage
code
Note
4901H38
CCUSHWA
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TSB/Document ID: LI4910-N-060969
Replacement Service Bulletin Number:
MFR Communication Date: 2026-04-18
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE
MFR Component System:
MFR Component Subsystem:
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