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Delphi TC3681 Suspension Ball Joint - Front Lower
| Brand | Delphi TC3681 |
|---|---|
| Position | Front Lower |
| Adjustable | No |
| Ball Joint Assembly | Yes |
| Bushing Quantity | 1 |
| Castle Nut Included | Yes |
| Color | Black |
| Cotter Pin Hole | Yes |
| Cotter Pin Included | Yes |
| Distance Between Mounting Holes | 35.0 |
| Dust Boot Included | Yes |
| Dust Boot Material | Choloroprene Rubber (CR) |
| Grease Fitting Included | No |
| Greaseable | No |
| Height | 3.701 |
| Height | 94.0 |
| Item Grade | Standard Replacement |
| Length | 106 |
| Material | Ball Material - Alloy Steel SAE 5140, Housing Material - Carbon Steel SAE 1040 |
| Mount Plate Included | No |
| Mounting Bolt Head Diameter | 1.047 |
| Mounting Bolt Head Diameter | 26.6 |
| Mounting Bolt Length | 1.24 |
| Mounting Bolt Length | 31.5 |
| Mounting Bolt Shank Diameter | 0.472 |
| Mounting Bolt Shank Diameter | 12.0 |
| Mounting Bolt Thread Diameter | 12.0 |
| Mounting Bolt Thread Length | 0.787 |
| Mounting Bolt Thread Length | 20.0 |
| Mounting Bolt Thread Pitch | 1.25 |
| Mounting Bolts Included | Yes |
| Mounting Hardware Included | Yes |
| Mounting Hole Quantity | 3 |
| Nuts Included | Yes |
| Stud Tapered End 1 Diameter | 0.61 |
| Stud Tapered End 1 Diameter | 15.5 |
| Stud Tapered End 2 Diameter | 0.709 |
| Stud Tapered End 2 Diameter | 18.0 |
| Stud Thread Diameter | 12.0 |
| Stud Thread Length | 0.866 |
| Stud Thread Length | 22.0 |
| Stud Thread Pitch | 1.25 |
| Tapered Stud | Yes |
| Washers Included | No |
| Width | 87.7 |
| Wrench Size | 0.63 |
| Wrench Size | 16.0 |
| Fits | Mercedes-Benz · 7 vehicles |
Standard replacement. OE expertise and dimensional analysis support compatibility with the original part.
Alloy steel ball. Carbon steel housing and a chloroprene dust boot add durable protection.
Complete assembly. Includes mounting hardware, castle nut, cotter pin, and dust boot.
Cross-references A 205 330 61 01 for the same application. See all 1.
Delphi TC3681 Front Lower Ball Joint
Delphi TC3681 is a front lower suspension ball joint built for OE-style replacement on select Mercedes-Benz applications. It is engineered with Delphi’s aftermarket steering and suspension expertise, using dimensional and material analysis to support proper fit and consistent operation.
Key Features
- Front lower suspension ball joint assembly for select Mercedes-Benz C300 and C350e models
- Ball material: alloy steel SAE 5140; housing material: carbon steel SAE 1040
- Dust boot included with chloroprene rubber construction
- Non-greaseable design with tapered stud and cotter pin hole
- Castle nut, cotter pin, nuts, and mounting hardware included
- Standard replacement grade for OE-style service
Detailed Description
Delphi TC3681 is a suspension ball joint for the front lower position, made for 2015-2018 Mercedes-Benz C300 and 2016-2018 Mercedes-Benz C350e models, except air ride applications. The part number TC3681 is built with an alloy steel ball and carbon steel housing, along with a chloroprene rubber dust boot to help protect the joint from road contamination. Delphi subjects its OE-focused steering components to extreme temperature and salt-spray testing, and uses dimensional and material analysis to support OE-to-aftermarket compatibility. This part cross-references Mercedes-Benz A 205 330 61 01 for the same application.
What It Helps Address
- Front-end looseness or play from a worn lower ball joint
- Clunking or knocking noises from the front suspension
- Uneven tire wear related to suspension joint wear
- Steering wander or reduced directional stability
- Inspection failures caused by excessive ball joint movement
Installation Notes and Tips
Fits 2015-2018 Mercedes-Benz C300, Front Lower, except Air Ride. Fits 2016-2018 Mercedes-Benz C350e, Front Lower, except Air Ride. Verify suspension configuration before ordering, since air ride vehicles are excluded. Confirm stud taper, mounting hole layout, and hardware orientation against the original part before installation. Use the included castle nut, cotter pin, and mounting hardware as specified by the service procedure, and complete a professional alignment after replacement.
Quality Assurance
Delphi builds this replacement ball joint using OE-oriented materials and validation methods, including temperature and corrosion exposure testing. The part number TC3681 is designed to meet the fit and function expectations of the listed Mercedes-Benz applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2018 | Mercedes-Benz | C300 | Front Lower | Except Air Ride |
| 2018 | Mercedes-Benz | C350e | Front Lower | Except Air Ride |
| 2017 | Mercedes-Benz | C300 | Front Lower | Except Air Ride |
| 2017 | Mercedes-Benz | C350e | Front Lower | Except Air Ride |
| 2016 | Mercedes-Benz | C300 | Front Lower | Except Air Ride |
| 2016 | Mercedes-Benz | C350e | Front Lower | Except Air Ride |
| 2015 | Mercedes-Benz | C300 | Front Lower | Except Air Ride |
| No rows match your filter. | ||||