1. Engine Crankshafts Products
  2. sku: 19976650608277632
  3. DODGE TRUCKS 03751808

DODGE TRUCKS 03751808 Van Harmonic Balancer Crankshaft Bolt Pulley 72-77 5.2L

fits model: B200, 318. make: Dodge. year: 1974.

03751808 Dodge Trucks 72-77 Van B200 Harmonic Balancer Crankshaft Pulley With Bolt Oem 5.2l 318

( Brand: Dodge Trucks ), ( Manufacturer Part Number: 03751808 ), ( Part Type: Balancer Crankshaft Bolt ), ( Id: 3f3cce99-3d5e-4db4-bce7-781483e2e743 ), ( Interchange: 309-208 )

Review DODGE TRUCKS 72-77 Van Harmonic Balancer Crankshaft Pulley Bolt Oem 5.2l fits B200 318 1974

The **Dodge 03751808 Harmonic Balancer Crankshaft Pulley Bolt** is a precision-engineered fastener specifically designed for the **1972 1977 Dodge B200 series vans** equipped with the **5.2L (318 cubic inch) Slant-6 engine**. This bolt plays a critical role in maintaining the integrity of the harmonic balancer assembly, which is responsible for dampening vibrations generated by the crankshaft during engine operation. Crafted from high-quality **chrome-molybdenum steel**, this bolt is heat-treated to ensure optimal strength and durability, capable of withstanding the high torque and stress exerted by the engine s rotating components. The bolt features a **fine-threaded design** that ensures a secure and leak-proof fit within the harmonic balancer s mounting holes, preventing any potential misalignment or loosening that could lead to excessive vibration, premature wear, or even catastrophic failure of the pulley system. Its **standard 12-point drive** allows for even torque distribution when using a socket, reducing the risk of cross-threading or stripping, while its **zinc-plated finish** provides corrosion resistance, protecting it from the harsh conditions often encountered in automotive environments. Whether you're performing routine maintenance, addressing a vibration issue, or replacing a worn-out component, this bolt is an essential replacement part that ensures the smooth and reliable operation of your classic Dodge van s engine. Proper installation with the manufacturer-recommended torque specification is advised to maintain optimal performance and longevity of the harmonic balancer assembly.

### **Pros and Cons of Buying a Dodge 03751808 (72-77 Van B200 Harmonic Balancer/Crankshaft Pulley Bolt for 5.2L 318 Engine)**

#### **Pros:**

1. **Direct Fitment** This part is specifically designed for the 1972 1977 Dodge B200 van with a 5.2L (318 cubic inch) V8 engine, ensuring compatibility without modification.

2. **Reliability** The harmonic balancer and crankshaft pulley are critical components that prevent excessive vibration and maintain engine balance. A high-quality replacement can improve drivability and reduce wear on related parts.

3. **Prevents Engine Damage** A failing harmonic balancer or cracked pulley bolt can lead to catastrophic engine failure if the pulley shatters. Replacing it proactively avoids costly repairs.

4. **Aftermarket Availability** Since this is an older model, aftermarket options (including OEM replacements) are still available, often at a lower cost than new factory parts.

5. **Easy Installation** The bolt and pulley assembly is relatively straightforward to replace, requiring basic tools and minimal mechanical skill.

6. **Cost-Effective** Compared to full engine rebuilds or replacements, this is a low-cost preventive maintenance item that extends engine life.

#### **Cons:**

1. **Age of the Part** Even if the part is new, the original engine may be in poor condition, meaning the fix is temporary if other issues (e.g., worn bearings, timing issues) exist.

2. **Potential Counterfeit Parts** Some aftermarket suppliers sell knockoffs that may fail prematurely or lack proper tolerances, leading to further problems.

3. **Limited Longevity** While the part itself may last, the rest of the engine (especially if neglected) could still fail sooner than expected.

4. **Skill Dependency** If the installer lacks experience, improper torque or alignment could cause misfires, belt slippage, or other issues.

5. **No Warranty on Used Engines** If buying a used van with this part, there s no guarantee the engine was properly maintained before the replacement.

6. **Possible Overkill for Low-Mileage Vans** If the van has very few miles and no history of vibration or pulley issues, replacing it may be unnecessary unless symptoms (like wobbling or unusual noise) are present.

---

### **Conclusion**

Replacing the harmonic balancer/crankshaft pulley bolt on a 1972 1977 Dodge B200 with a 5.2L engine is a **smart preventive measure** if the vehicle shows signs of wear (vibration, rattling, or a cracked pulley). It s a **cost-effective way to avoid a major engine failure** and improve drivability. However, if the van is already in poor condition or has other neglected components, the fix may only buy temporary relief.

For **best results**, pair this replacement with a **full engine inspection** (oil analysis, timing chain/belt check, and bearing condition). If the engine is otherwise healthy, this part alone will significantly reduce the risk of sudden failure.

---

### **Recommendation**

- **Buy the part** (preferably from a reputable supplier like **RockAuto, Summit Racing, or an OEM dealer**) if:

- The van exhibits **vibration, unusual noise, or a visibly cracked pulley bolt**.

- You plan to **keep the vehicle long-term** and want to prevent a costly breakdown.

- The engine has **high miles but was well-maintained** (oil changes, proper cooling, etc.).

- **Avoid buying it** if:

- The van is **already in poor condition** with multiple unresolved issues.

- You re unsure of the **engine s overall health** consider a **compression test or professional inspection** first.

- The part is being purchased **as a speculative fix** for a vehicle you don t intend to drive regularly.

**Final Verdict:** This is a **worthwhile upgrade for reliability**, but it should be part of a **broader maintenance strategy** rather than a standalone solution. If symptoms exist, replace it; if not, monitor the engine s condition before committing.

Details:

Model: DODGE VAN 200 SERIES. DODGE PICKUP 400 SERIES 77 8-360. Search for more parts DODGE VAN 200 SERIES. DODGE VAN 100 SERIES 72-77 8-360.

part #: 03751808 price

  • $150.00

specifications cranshafengin:

  • for models: B200, 318
  • for makes: Dodge
  • for years: 1974
  • brand: Dodge Trucks
  • mpn: 03751808
  • part type: Balancer Crankshaft Bolt
  • id: 3f3cce99-3d5e-4db4-bce7-781483e2e743
  • interchange: 309-208

returns cranshafengin:

  • paid by: Seller
  • policy: Returns Accepted
  • time: 30 Days

general cranshafengin:

  • condition: Used
  • Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

offer cranshafengin:

  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: April 22, 2026
  • quantity: 1

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  • class: Standard
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  • cost: $0.00
  • transit: 3-7 Days
  • type: Fixed

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  • # reviews: 16003
  • rating: 99.5%
  • city: Brush, Colorado

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for models: b200, 318, for makes: dodge, for years: 1974, part type: balancer crankshaft bolt, id: 3f3cce99-3d5e-4db4-bce7-781483e2e743, interchange: 309-208,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 19976650608277632,
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1 offer $150.00 USD
  • Used. Offer #1 priced at $150.00 + $0.00 shipping estimate = $150.00* total. DODGE VAN 300 SERIES 72-77 8-360. Harmonic Balancer.FREE SHIPPING

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