PETERBILT D1029-8709 Hose Hump Pete Cat 1/2 359 379 3406B 3406C

( Manufacturer Part Number: D1029-8709 ), ( Part Type: Hose )

Review PETERBILT Hose Hump Dbl 1/2 Inch Pete 359 379 Cat fits X6

The **Peterbilt D1029-8709 Hose Hump (Double " x 6') with Pete 359/379 and Cat 3406B/C Compatibility** is a meticulously engineered, high-performance hydraulic hose assembly designed specifically for heavy-duty diesel engines, particularly those found in Peterbilt Model D10 series trucks and Caterpillar 3406B/3406C engines. This robust hose hump is crafted to meet the rigorous demands of commercial trucking, construction, and industrial applications where reliability, durability, and precision are non-negotiable. The assembly features a **double -inch (12.7mm) hydraulic line configuration**, ensuring optimal fluid flow and pressure management for critical engine systems such as fuel injection, turbocharging, and aftercooling circuits. The **Pete 359/379** designation indicates compatibility with Peterbilt s proprietary hydraulic fittings, guaranteeing a seamless connection to the truck s fuel and hydraulic systems, while the **Cat 3406B/C** specification ensures flawless integration with Caterpillar s robust inline six-cylinder engines, which are renowned for their power and endurance in demanding environments.

Constructed from **high-grade, abrasion-resistant synthetic rubber with a reinforced polyester braid**, this hose hump is engineered to withstand extreme temperatures, aggressive chemical exposure, and constant flexing under heavy loads making it ideal for applications where traditional hoses would fail prematurely. The **8709** model number denotes a specialized design optimized for the D10 chassis, featuring a compact yet sturdy hump configuration that maximizes space efficiency without compromising structural integrity. The assembly is further fortified with **galvanized steel or heavy-duty stainless steel fittings**, resistant to corrosion and wear, ensuring long-term performance even in harsh, corrosive environments such as off-road construction sites or marine applications. The **D1029** designation highlights its tailored fit for the Peterbilt D10 s engine bay layout, where precise routing and secure mounting are essential to prevent leaks, kinks, or premature failure.

Beyond its mechanical robustness, this hose hump is designed with **ease of installation and maintenance** in mind. The **pre-assembled, ready-to-mount configuration** eliminates the need for on-site splicing or complex fittings, reducing downtime and labor costs. The **6-foot length** provides ample reach for most engine bay applications while maintaining flexibility for custom routing where necessary. Whether retrofitting an existing Peterbilt D10 or equipping a new build with a Cat 3406B/C engine, this hose hump delivers a **bulletproof solution** for hydraulic and fuel system integrity. Its **universal compatibility** with both Peterbilt and Caterpillar components makes it a versatile choice for fleets operating mixed fleets or those requiring backup parts for legacy vehicles. Investing in this hose hump ensures peace of mind, knowing that your engine s critical hydraulic and fuel pathways are protected by a component built to last even under the most punishing conditions.

### **Pros and Cons of Buying a Peterbilt D1029 (1987) with Hose Hump, Double 1/2" x6 Pete 359/379, and Caterpillar 3406B/C Engines**

#### **Overview**

This is a classic **Peterbilt D1029** from **1987**, equipped with a **hose hump** (likely for hydraulic or air brake lines), **Pete 359/379** transmission, and a **Caterpillar 3406B or 3406C** engine. These trucks were common in the **1980s** and were widely used for **regional and over-the-road (OTR) hauling**. Below is a detailed breakdown of the **pros and cons** of purchasing one today.

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### **Pros**

1. **Proven Reliability (If Well-Maintained)**

- The **Caterpillar 3406B/C** is a robust engine known for durability, especially in the **3406C** variant, which had slight improvements over the **3406B**.

- The **Pete 359/379** is a **full-power-shift transmission** with good torque multiplication, making it suitable for heavy loads.

- Peterbilt s **D-series** chassis was well-built, with a strong frame and suspension designed for long-haul durability.

2. **Strong Resale Value (For a Classic Model)**

- **1980s Peterbilt D-models** (especially well-documented ones) hold value better than many later trucks due to their **simplicity and lack of complex electronics**.

- If restored or kept in good condition, they can be **collector s items** or **museum-quality** trucks.

3. **Lower Purchase Price Compared to Modern Trucks**

- A **1987 Peterbilt D1029** in average condition can be purchased for **$20,000 $50,000**, depending on mileage, maintenance history, and condition.

- This makes it **far cheaper** than buying a **new or even a lightly used modern semi**.

4. **Simpler Mechanics (Easier to Repair for Some Buyers)**

- **No advanced diagnostics or computer troubleshooting** required many issues can be diagnosed with **basic tools and experience**.

- **Mechanical transmissions (Pete 359/379)** are easier to rebuild than modern automated transmissions.

- **Hydraulic and air systems** (like the hose hump) are **well-understood** and have been used for decades.

5. **Potential for Restoration & Customization**

- Many buyers purchase **older trucks for restoration**, allowing them to **modify, repaint, or upgrade** components to modern standards.

- The **classic Peterbilt styling** (especially the **D1029 s sleek cab**) is highly sought after in the **trucking enthusiast community**.

6. **Good for Hauling Heavy Loads (If Engineered Properly)**

- The **3406B/C** produces ** 400 450 HP** (depending on model), which is **adequate for regional hauling** if the truck is **properly maintained and upgraded**.

- The **hose hump** suggests it may have been used for **specialized hauling** (e.g., construction, logging, or industrial work).

7. **Lower Fuel Costs (Compared to Modern Engines)**

- While **not as efficient as modern engines**, the **3406B/C** runs on **diesel**, and with proper tuning, it can be **cost-effective** for **short to medium-haul operations**.

8. **Community & Support**

- There is a **strong community of Peterbilt and Caterpillar enthusiasts** who share **restoration tips, parts, and maintenance advice**.

- **Aftermarket support** (e.g., **Pete s Power Shift transmissions, Caterpillar rebuilds**) is still available.

---

### **Cons**

1. **High Maintenance Requirements**

- **1987 is an old model**, meaning **wear-and-tear issues** (e.g., **suspension, drivetrain, electrical**) are likely.

- **Rust** is a major concern **frame, axles, and undercarriage** may need **extensive repairs**.

- **No modern emissions controls** older trucks **burn more fuel and produce more pollution**, which may be a concern for **modern regulations**.

2. **Potential for Hidden Mechanical Issues**

- **Transmission (Pete 359/379)** can develop **leaks, clutch wear, or synchro failures** over time.

- **Engine (3406B/C)** may have **turbocharger issues, head gasket leaks, or fuel system problems** if not well-maintained.

- **Brakes, steering, and suspension** may require **full replacements** due to age.

3. **Electrical System Reliability**

- **Older trucks have simpler electrical systems**, but **corrosion, failing relays, and outdated wiring** can cause **random failures**.

- **No modern diagnostics** troubleshooting may require **more time and guesswork**.

4. **Fuel Efficiency & Modern Standards**

- **MPG will be lower** than modern trucks (likely **6 8 MPG** in OTR vs. **8 12 MPG** in newer models).

- **No EPA compliance** running this truck in **high-emission zones** may be **illegal or restricted**.

5. **Parts Availability & Costs**

- **Some parts are still available**, but **rare or discontinued components** (e.g., **specific hoses, seals, or sensors**) can be **expensive or hard to find**.

- **Labor costs** for repairs may be **higher** than on newer trucks due to **specialized knowledge required**.

6. **Safety & Modern Driver Aids**

- **No ABS, air brakes, or modern safety features** stopping distances and control may be **less precise** than modern trucks.

- **No telematics, GPS tracking, or advanced driver-assist systems** tracking location and performance is **manual**.

- **Cabin comfort** is **less ergonomic** older seats, controls, and **less soundproofing** make long hauls **less comfortable**.

7. **Insurance & Compliance Challenges**

- **Insurance may be more expensive** due to **age, lack of modern safety features, and higher risk of breakdowns**.

- **DOT and state inspections** may flag **emissions, lighting, or structural issues**, leading to **fines or restrictions**.

8. **Limited Use for Modern Hauling**

- **Most carriers prefer newer trucks** for **fleet operations** due to **reliability, fuel efficiency, and compliance**.

- **Leasing or renting** this truck for **commercial hauling** may be **difficult** unless it s **heavily modified**.

9. **Potential for Hidden Costs**

- **Full restoration** (if buying for a project) can **easily exceed $50,000 $100,000** depending on scope.

- **Storage and transport** of a **large, old truck** can be **costly** if not properly secured.

10. **Market & Depreciation Risks**

- **Classic trucks depreciate** unless they are **well-documented, restored, or in high demand**.

- **Resale value drops sharply** compared to **modern or lightly used trucks**.

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### **Conclusion & Recommendation**

**Truck enthusiasts** who want a **restoration project** and enjoy **mechanical work**.

**Owners who need a **secondary or backup truck** for **light-duty hauling** (e.g., farm work, construction, or occasional trips).

**Collectors** who appreciate **classic trucking history** and are willing to **invest time and money** into preservation.

**Budget-conscious buyers** who **prioritize low purchase price** over **modern efficiency and reliability**.

**Commercial fleets** needing **high reliability, fuel efficiency, and compliance**.

**Long-haul OTR drivers** who require **modern safety and maintenance support**.

**Buyers who want a **plug-and-play truck** with **minimal repairs**.

**Those who cannot afford **unexpected mechanical failures** or **high maintenance costs**.

- **If you are an experienced mechanic, have a budget for restoration, and enjoy working on classic trucks, this Peterbilt D1029 could be a rewarding purchase.**

- **If you need a truck for **reliable, daily commercial use**, consider a **used 2000s-era Peterbilt or Freightliner with modern engines and transmissions.**

- **Before buying, get a **full pre-purchase inspection (PPI)** from a **truck mechanic familiar with 1980s models** to assess **engine, transmission, frame, and electrical health.**

- **Budget for at least **$10,000 $20,0

Details:

Fits 359 379 Pete's with Caterpillar engines. New Peterbilt Bancroft D1029-8709 Air - Hump Hose. This is a 4 1/2 inch x 6 long.

part #: d10298709 prices

• $37.46-$196.07

specifications emissyste:

• for models: X6
• for makes: Peterbilt
• mpn: D1029-8709
• part type: Hose

general emissyste:

• condition: New
• Car Truck Parts Accessories > Exhaust Emission Systems > Other Exhaust Emission Parts

returns emissyste:

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

seller emissyste:

• # reviews: 2857
• rating: 100.0%
• city: Carlton, Oregon

offer emissyste:

• options: Ship-to-home
• availability: In Stock
• started: February 8, 2026
• sold: 0
• quantity: 1

shipping emissyste:

• cost: $15.00
• transit: 4-10 Days
• class: Standard
• type: Fixed
• service: USPS Ground Advantage
• carrier: USPS

payments emissyste:

• credit card: Visa
• other
• wallet: Paypal

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