Mercedes-Benz Truck Engine Mount OEM 3002400117 | Rubber-Metal Engine Mount Guide

In heavy-duty trucking—long-haul mileage, high payloads, frequent stop-and-go, and rough road inputs—powertrain stability and NVH (noise, vibration, and harshness) directly impact uptime and total maintenance cost. The engine mount is a critical rubber-metal component that connects the engine to the chassis/subframe. It must support weight and torque while isolating vibration across multiple frequency ranges.

This in-depth guide focuses on the Mercedes truck engine mount with OEM 3002400117, including its cross reference OE numbers and typical applications (MK, NG, O 303, OH Series). It’s written for B2B buyers, including parts distributors, repair chains, and fleet maintenance managers, and it highlights Hebei Huami New Material Technology Co., Ltd.’s manufacturing and quality strengths in Mercedes-Benz engine mount solutions.

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1. What a Mercedes Truck Engine Mount Does 

1.1 Supports engine weight and maintains powertrain alignment

A truck engine and its related assemblies (gearbox housing, brackets, accessories, etc.) are heavy and produce large inertial forces. The rubber-metal engine mount provides structural support through its metal bracket/core, keeping the engine positioned within designed tolerances. Stable alignment helps protect:

• driveline geometry

• exhaust routing and hangers

• cooling and fuel line layouts

• chassis mounting points

In short: a healthy mount reduces misalignment risks and secondary wear.

1.2 Absorbs vibration and road shocks

Engine vibration varies with operating states—idle, low-RPM high torque, and cruising RPM. Heavy trucks also experience strong road shocks from uneven pavement, ramps, and jobsite roads. The mount’s rubber elastomer works via elastic deformation + damping energy dissipation, reducing vibration transfer from engine to chassis and cab.

1.3 Improves NVH and protects drivetrain components

When an engine mount deteriorates, vibration transmission increases and may amplify structure-borne noise. Symptoms often include steering wheel/pedal vibration, rising cabin noise, and harsher shift feel. Long-term vibration exposure can accelerate fatigue in:

• frame attachment points

• exhaust brackets

• coolant/fuel line supports

• nearby fasteners and clamps

A well-designed Mercedes truck engine mount improves NVH and reduces the chance of cascading failures.

1.4 Critical for heavy-load, high-mileage duty cycles

Fleet vehicles run high mileage with continuous load cycles—heavy payload climbs, repeated shifting, extended idling, and frequent start-stop events. Engine mounts are under combined compression and shear loading for long periods. Therefore, durability depends heavily on:

• rubber fatigue resistance

• heat and oil resistance

• rubber-to-metal bond strength

• consistent mass production quality

Choosing a heavy-duty mount with stable consistency reduces downtime and repeat repairs.

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2. OEM 3002400117 Overview (Applications + Cross References)

2.1 Designed for Mercedes-Benz truck engine mounting systems

OEM 3002400117 refers to an engine mounting / suspension component used in Mercedes-Benz truck powertrain systems (exact fitment depends on vehicle platform and configuration). For accurate procurement, it’s best to provide the truck series, model year, engine type, or photos/dimensions of the existing mount.

2.2 Typical vehicle applications (as provided)

Common application references (final confirmation required by catalog and vehicle configuration):

• TRUCK / MERCEDES-BENZ / MK _

• TRUCK / MERCEDES-BENZ / NG _

• TRUCK / MERCEDES-BENZ / O 303

• TRUCK / MERCEDES-BENZ / OH SERIES

Note: Variations can exist by year, engine, and mounting position. Always verify by OE number + structure + dimensions.

2.3 Common installation positions (varies by model)

Engine mounts may be installed as:

• Front engine mount: supports front weight and controls longitudinal movement

• Rear mount / powertrain mount: works with transmission support to stabilize powertrain posture

• Left/right side mounts: reduces lateral movement and torsional roll

Many heavy trucks use multi-point mounting systems; confirm the exact position before ordering.

2.4 Cross reference / alternative OE numbers

The following cross references (customer-provided) are commonly used for inquiry and compatibility checks (final confirmation required):

• 3002400117

• 3002400217

• 3012403017

• 3012403517

• 3832401017

• 3832401517

• 6172400017

• 6172400117

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3. Structure and Material Engineering (Core to NVH + Service Life)

3.1 Construction: metal bracket + rubber damping body

A rubber-metal engine mount typically includes:

• Metal components (bracket, sleeve, plates): carry structural loads and ensure mounting accuracy

• Rubber elastomer (damping body): provides elasticity and damping to control vibration transfer

The performance relies heavily on bonding integrity, because separation between rubber and metal leads to rapid failure.

3.2 Rubber material options: NR / NBR / EPDM (matched to duty conditions)

Hebei Huami can select or formulate elastomers based on operating conditions:

• NR (Natural Rubber): strong resilience and fatigue resistance for repeated load cycles and shock

• NBR (Nitrile Rubber): superior oil resistance for areas exposed to oil contamination

• EPDM: excellent weathering and aging resistance for harsh temperature swings and environment

Material selection should consider heat exposure, oil contact, load spectra, and target lifetime.

3.3 Shore A hardness + key durability targets

• Hardness (Shore A): 55–80 (customizable for isolation vs. stiffness balance)

• Heat resistance: focus on hardness retention + compression set after thermal aging

• Oil resistance: focus on volume change + strength retention + bond stability

• Fatigue resistance: focus on crack growth under repeated shear/compression cycles

3.4 Why high-damping rubber matters for engine vibration control

High-damping formulations dissipate vibration energy efficiently in target frequency bands, helping reduce idle shake and resonance peaks. For fleets, the best solution is not simply “softer” rubber—it’s the right balance between:

• damping for NVH comfort

• stiffness for powertrain positioning

• durability under heavy-load duty cycles

3.5 Metal corrosion protection + vulcanized bonding process

• Anti-corrosion treatment: coating/plating options to meet salt-spray or harsh environment requirements

• Bonding process: surface preparation + bonding system + controlled vulcanization window to ensure stable rubber-metal adhesion under thermal cycling and heavy loads

  
  

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4. Common Failure Modes and Symptoms (High Search Intent)

The items below match frequent online queries for truck engine mount replacement:

4.1 Excessive vibration at idle or during acceleration

If the steering wheel, pedals, or cab vibrate more than usual—especially at idle—rubber aging/hardening or internal cracking may be reducing isolation performance.

4.2 Stronger “shift shock” or harsh engagement feel

A worn mount can increase driveline movement, making shift events feel harsher, particularly under load.

4.3 Engine sag, misalignment, or abnormal noise

Mount collapse can lower the engine position, reducing clearance and potentially causing interference. Clunks or knocks over bumps can also appear as the powertrain moves beyond normal limits.

4.4 Rubber cracking, tearing, or debonding

Visible cracks, bulging, tearing, or separation at the rubber-metal interface indicate the mount is near end-of-life.

4.5 Quick checks to confirm replacement need

• Visual inspection for cracks, sagging, separation, corrosion

• Operational check: idle vibration, acceleration resonance, shift shock, clunking

• Clearance check: signs of interference or reduced gaps

• Comparative check: left vs. right height/deflection differences

If multiple symptoms appear, schedule truck engine mount replacement early to prevent secondary damage.

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5. Installation and Maintenance Guidelines

5.1 Safety support and preparation

• Use proper lifting equipment and secure the truck

• Support the engine safely before removing any mount fasteners

• Photograph orientation, spacers, and fastener locations to avoid installation errors

5.2 Key removal/installation steps (general workflow)

1. Relieve mount load by supporting the engine at a correct height

2. Remove fasteners in sequence

3. Clean mounting surfaces and inspect holes/threads

4. Install new mount with correct orientation

5. Pre-tighten → set to normal load posture → final torque

5.3 Bolt torque requirements (placeholder)

• Torque values: Refer to Mercedes service manual / model-specific specs

Under-torque can cause noise/loosening; over-torque may distort metal parts or create abnormal rubber preload.

5.4 Post-install inspection and road test

• Confirm improvement at idle and no interference noise

• Test drive: start/stop, acceleration, deceleration, shifting, bump inputs

• Recheck fasteners after short mileage if required by your workshop standard

5.5 Maintenance tips to extend mount life

• Fix oil leaks early to reduce rubber exposure

• Avoid chronic overloading and harsh shock inputs when possible

• Inspect the full mounting system (engine + transmission mounts), not only one point

  
  

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6. Why Hebei Huami New Material Is a Strong B2B Supplier

Hebei Huami New Material Technology Co., Ltd. focuses on rubber products and rubber-metal bonded components for demanding industries. For Mercedes-Benz engine mount projects and aftermarket supply, the company emphasizes durability engineering, production consistency, and verification testing.

6.1 30 years of rubber and rubber-metal manufacturing experience

• 30+ years manufacturing experience in rubber and rubber-metal parts

• Applications across automotive, heavy-duty trucks, construction machinery, high-speed rail, and aerospace—supporting complex duty conditions

6.2 Management systems and trade compliance advantages

• IATF16949 quality management capability

• TÜV certification support

• AEO Advanced Certification for efficient customs processes and stable export supply

6.3 In-house rubber formulation and heavy-duty durability design

• In-house formulation to target high damping, long life, and reinforced heavy-load mounts

• Custom engineering based on heat/oil exposure, load profiles, NVH targets, and required service life

6.4 Precision tooling and scalable production for high consistency

• Precision mold development and controlled process windows

• Standardized production lines supporting stable batch consistency—important for distributors and fleets

6.5 Full-process testing and validation

• Routine checks: hardness, tensile, tear, compression set, bond strength

• Validation: oil resistance, heat aging, salt spray, thermal cycling, fatigue life tests

• Supports OEM/ODM, low MOQ customization, stable lead times

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7. Specification & Parameter Table (with OE and Applications)

Note: Dimensions/torque/packaging can be finalized after confirming drawing or sample.

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8. FAQ (8 Q&As)

Q1: What are the cross reference OE numbers for 3002400117?
A: Common cross references include 3002400117, 3002400217, 3012403017, 3012403517, 3832401017, 3832401517, 6172400017, 6172400117. Always verify by vehicle configuration, mount position, and dimensions.

Q2: Which Mercedes-Benz truck series does this engine mount fit?
A: Typical applications include TRUCK/MERCEDESBENZ/MK _, NG _, O 303, and OH SERIES, subject to model/year/engine confirmation.

Q3: What are typical symptoms of a worn engine mount?
A: Excessive idle vibration, stronger vibration during acceleration, increased shift shock, clunking noises, and visible rubber cracking, sagging, or debonding.

Q4: Is it necessary to replace engine mounts in pairs?
A: In heavy-duty service, mounts often age together. Many workshops recommend inspecting all mounts (engine + transmission) and replacing in sets when wear is similar to reduce repeat labor.

Q5: Which rubber material should I choose (NR/NBR/EPDM)?
A: NR offers excellent fatigue resistance, NBR improves oil resistance, and EPDM enhances aging/weather resistance. Selection depends on heat, oil exposure, load, and target lifetime.

Q6: Why is vibration still present after truck engine mount replacement?
A: Possible causes include other worn mounts, incorrect torque or tightening posture, interference with nearby parts, or engine idle issues. Inspect the full mounting system.

Q7: How can I extend the service life of a Mercedes truck engine mount?
A: Fix oil leaks quickly, avoid repeated shock loading when possible, and perform routine inspections for cracks, sagging, and bond separation.

Q8: Do you support OEM/ODM and low MOQ orders?
A: Yes. Hebei Huami supports OEM/ODM and low MOQ customization based on drawings/samples, with material/hardness tuning and stable lead times.