14 detailed photos and 1 video of the actual item β this exact part is what ships.
From donor vehicle 2014 Mercedes C350 (stock VV0428).
βΆ Watch the engine test video!
Filmed in the donor vehicle before removal β what you hear is what you get.
ASE Master Mechanic Inspection
Hands-on tested before listing by Mike on February 25, 2026
(1 - RUNNING ENGINE TEST NOTES): Engine runs great, starts right up, idle is smooth, and wide-open throttle snap sounds good. Oil quality looks good and there's no smoke from the tailpipes. No unusual noises heard from the operating engine. (2 - POST REMOVAL INSPECTION NOTES): Engine overall looks solid with no major issues found during teardown. Slight oil weep around VVT solenoids, oil pan and rear main seal. Valve covers don't appear to be leaking, and front main looks dry. The plastic coolant pipe at rear of left head is aged and will need replacement. Serpentine belt needs replaced as well, it's aged and cracks are developing. (3 - SHOULD ALWAYS BE DONE): Replacement of timing components, plugs, injectors, pumps, seals, gaskets, hoses, and filters should be done prior to installation for long-term reliability.
- Overall test result
- Yes
- Start quality
- GOOD
- Idle quality
- GOOD
- Output under load
- WIDE OPEN THROTTLE SNAP GOOD
- Oil quality
- GOOD
- Smoke from tailpipes
- NONE
- Unusual engine noise
- NONE
- Turbo notes
- NA
Noted: NOTED OIL WEEPING AROUND VVTI SOLENOIDS AT FRONT TIMING COVER, WEEPING AROUND PAN AND POSSIBLY REAR MAIN SEAL.
Note: PLASTIC COOLANT PIPE AT REAR OF LEFT CYLINDER HEAD IS AGED AND WILL NEED REPLACMENT.
In-car test: Engine runs nice, very smooth idle and wide open throttl snap sounds good. Radiator wasnt hit so cooling system wasnt compromised. Pending a compression test and physical check this will be a unit.
Out-of-car inspection: Overall engine looks good. Did note oil weep around vvt solenoids and oil pan and possibly rear main seal as well. noted the plastic coolant pipe at rear of left (driver side) head is aged and will need replacment, will also need a serpintine belt as i can see some small cracks developing. As always, I recommend any service and wear items such as timing chains, belts, guides , tensioners, spark plugs ,injectors, pumps, seals, gaskets and filter be serviced before engine is put back into service.
12-15 MERCEDES C350 (W204) 3.5L M276.957 ENGINE ASSEMBLY TESTED VIDEO (105k)
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Paste your 17-character VIN β itβs on your registration, insurance card, or the driverβs-door jamb.
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Item Specifics
- Donor vehicle
- 2014 Mercedes C350
- Donor VIN
- WDDGJ5HBXEG164892
- Donor miles
- 105,513
- Interchange #
- 300-85054
- Brand
- Mercedes (Genuine OEM)
- Stock #
- VV0428
- Viking Item ID
- V59269
ENGINE ASSEMBLY
First-start note: we treat every engine with fogging oil to protect the cylinders in storage and transit. A little smoke on first start-up is normal and expected β it should clear within about 30 minutes of normal running as the fogging oil burns off.
- βThese photos show the exact individual part you'll receive β no stock photos
- βGenuine OEM β factory-original parts
- βInspected before listing β engines & transmissions tested by an ASE Master Mechanic
- βFREE 90-day warranty & 90-day any-reason returns β we cover return shipping for eligible lower-48 + DC orders, freight included (details)
- βFreight item β leaves our dock within 2 business days after payment, strapped and wrapped (holidays excluded). VIN verification of fitment required before shipping.
- βWant longer coverage? Extended warranties to 180 or 365 days β see options
Ask about this part / verify fitment β free, no pressure
Compatible Vehicles (5)
Verified Hollander interchange fitment β the same stickered, tracked compatibility data our listing crew uses. Scroll inside the table; no page-flipping. Not sure? Use the VIN check above and weβll confirm.
| Year | Make | Model | Trim | Engine | Notes |
|---|---|---|---|---|---|
| 2013 | Mercedes-Benz | C350 | Base Coupe 2-Door | 3.5L 3498CC V6 FLEX DOHC Naturally Aspirated | |
| 2013 | Mercedes-Benz | C350 | Base Coupe 2-Door | 3.5L 3498CC V6 GAS DOHC Naturally Aspirated | |
| 2014 | Mercedes-Benz | C350 | Base Coupe 2-Door | 3.5L 3498CC V6 FLEX DOHC Naturally Aspirated | |
| 2014 | Mercedes-Benz | C350 | Base Coupe 2-Door | 3.5L 3498CC V6 GAS DOHC Naturally Aspirated | |
| 2015 | Mercedes-Benz | C350 | Base Coupe 2-Door | 3.5L 3498CC V6 GAS DOHC Naturally Aspirated |