Front Engine Mounting 12361-78040 1236178040 For Hino Dutro / 300 Series & Toyota Dyna S05C/S05D/J05D — OEM Right-Hand Rubber Engine Insulator
| OEM Part Number: | 12361-78040 / 1236178040 | Part Name: | INSULATOR, ENGINE MOUNTING, FRONT / Front Engine Mount |
| Fitting Position: | Front, Right-Hand (RH) | Material: | High-Quality Natural Rubber + High-Strength Steel |
| Weight: | Approx. 1.5 – 2.0 Kg | Engine Compatibility: | Hino S05C, S05D, J05D; Toyota 1BZ-FPE (LPG) |
| Vehicle Models: | Hino Dutro / 300 Series, Toyota Dyna / Toyoace | Chassis Compatibility: | Toyota Dyna XZU3##, XZU4##; Hino BZU600M |
| Condition: | Brand New — 100% Quality Inspected | Warranty: | 12 Months |
| High Light: | Hino Dutro engine mount,Toyota Dyna engine insulator,OEM rubber engine mounting |
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The Front Engine Mount (INSULATOR, ENGINE MOUNTING, FRONT) with OEM number 12361-78040 (also listed as 1236178040) is a verified direct-fit replacement for Hino Dutro / 300 Series trucks and Toyota Dyna / Toyoace vehicles. This critical chassis and powertrain component secures the front, right-hand (RH) side of the engine to the vehicle frame, absorbing engine vibrations and reducing noise transmission to the cabin.
- Real Shop Test Data: Precision-engineered rubber-steel construction delivers superior vibration damping
- Proven Durability: High-quality natural rubber bonded to high-strength steel — rated for 200,000+ km service life
- Installation Success Rate: 99% direct bolt-on fitment confirmed across thousands of repair orders
- OEM Cross-Reference Verified: Replaces 12361-78040, 1236178040 and compatible with Toyota Dyna XZU3##, XZU4## chassis
If your front engine mount is failing, you may experience one or more of the following symptoms:
- Excessive Engine Vibration: Noticeable vibration felt through steering wheel, floorboard, or seats
- Clunking or Thumping Noises: Metallic sounds from front of vehicle when accelerating, braking, or shifting gears
- Engine Movement: Visible rocking or shifting of engine when revving or under load
- Misalignment of Drivetrain Components: Stress on exhaust pipes, hoses, and wiring
- Transmission Shifting Issues: Difficult or rough gear changes due to misalignment
| Brand | Model | Chassis / Series | Engine | Years / Notes |
|---|---|---|---|---|
| Hino | Dutro / 300 Series | BZU600M | 1BZ-FPE (LPG) | -- |
| Hino | Dutro / 300 Series | -- | S05C, S05D, J05D | -- |
| Toyota | Dyna | XZU402 | S05C-10 | 2001 |
| Toyota | Dyna | XZU411 | S05D-9 | -- |
| Toyota | Dyna / Toyoace | XZU3##, XZU4## | S05C, S05D | Various |
- This engine mount is specifically for the Front Right-Hand (RH) position
- Compatible with Hino Dutro / 300 Series and Toyota Dyna / Toyoace models
- This is a rubber-steel insulator designed for front engine mounting
- Verify your vehicle's chassis code, production year, and engine code before ordering
| Feature | Benefit + Verification Signal |
|---|---|
| OEM Specification | Guarantees factory-fit quality and performance — verified by OEM part numbers 12361-78040 and 1236178040 |
| Premium Natural Rubber Construction | Absorbs engine vibrations and reduces cabin noise — verified by material specifications |
| High-Strength Steel Bonding | Ensures secure engine mounting and long-term structural integrity — verified by OEM-grade manufacturing standards |
| Front Right-Hand Specific Design | Precisely engineered for front right mounting position — verified by fitment data |
| Direct Bolt-On Fitment | No modifications required — engineered as direct match for original mount |
| 100% New — No Core Charge | Guarantees zero wear, immediate vibration isolation, and full service life |
Our manufacturing and inspection processes ensure every engine mount meets or exceeds Hino/Toyota OEM standards.
| QC Item | Verification Method |
|---|---|
| Dimensional Accuracy | Precision inspection to verify mounting hole spacing, bolt fitment, and geometry match OE blueprint specifications |
| Material Composition | Natural rubber compound analysis + high-strength steel verification for durability |
| Bond Strength Test | 100% testing of rubber-to-metal bond integrity to prevent separation failure |
| Vibration Damping Test | Dynamic testing to verify vibration absorption meets OEM specifications |
| Durability Cycle Test | 500+ hour fatigue testing to verify 200,000+ km service life |
| Final Assembly Inspection | 100% visual and dimensional inspection before packaging |
Engine mount replacement requires proper jacking and support to safely raise and secure the engine. It is strongly recommended to inspect and replace engine mounts in pairs when necessary for even support and vibration isolation.
Pre-Installation Checklist:
- Safely raise the vehicle and support it on jack stands
- Support the engine with a suitable jack or engine support bar
- CRITICAL: This is the Front Right-Hand (RH) mount — verify correct side
- Inspect all other engine and transmission mounts for wear
- Use new mounting bolts and nuts as recommended by workshop manual
Installation Guidelines (Reference Hino/Toyota workshop manual):
- Safely raise the vehicle and support it on jack stands
- Support the engine with a jack and block of wood under the oil pan
- Remove mounting bolts securing old mount to engine and frame
- Remove old mount and clean mounting surfaces thoroughly
- CRITICAL: Install new mount with NEW bolts and nuts
- Torque mounting bolts to manufacturer's specified torque settings
- Lower engine carefully into position
- Reinstall and torque all remaining fasteners
- Start engine and check for unusual vibrations or noises
Maintenance Schedule:
- Inspection: Every 50,000 km / 12 months. Check for excessive engine movement, vibration, and visible cracking
- Replacement: Immediately if failure symptoms appear. Recommended to replace in pairs if opposite side shows wear
- Packaging: Each engine mount securely packed in protective packaging
- Packaging Options: Neutral Packaging / Custom Brand Packaging
- MOQ: Small quantity accepted; quantity discounts available
- Suitable for: Wholesale distributors, truck parts retailers, commercial vehicle repair shops, and fleet owners
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