CHEVROLET 3139134 Nos Gm Delco Thermostat 60 61 180 158-P

( Manufacturer Part Number: 3139134 ), ( Part Type: Thermostat ), ( Vintage Part: Yes )

Review CHEVROLET 60 61 Nos Gm Delco 180 Degree Thermostat fits 1959

The **Chevrolet 3139134 1959-1961 NOS GM Delco 180 Thermostat (Part #158-P)** is a meticulously preserved, never-overhauled (NOS) automotive component designed to regulate engine temperature with precision in classic General Motors vehicles from the late 1950s and early 1960s. Crafted by **Delco-Remy**, a division of General Motors renowned for its high-quality automotive electrical and mechanical parts, this thermostat is a critical element in maintaining optimal engine performance, fuel efficiency, and longevity for models like the 1959-1961 Chevrolet Bel Air, Impala, and Nomad, as well as other GM platforms equipped with the **265 cubic-inch inline-six (265 I6) or 283 cubic-inch V8 (283 V8)** engines. The **180-degree opening temperature** ensures that the engine reaches operating temperature efficiently while preventing overheating, a hallmark of Delco s engineering during this era. Constructed from durable materials, including a robust metal housing and a high-quality wax pellet that expands with heat to open the valve, this thermostat is built to last, reflecting the reliability standards of its time. Its **158-P designation** confirms compatibility with the **1959-1961 GM thermostat housing**, making it a direct replacement for stock applications without the need for modifications. Whether restoring a vintage Chevrolet to showroom condition or maintaining a beloved classic, this NOS thermostat delivers the authenticity and performance expected from an original GM component, ensuring seamless integration with the engine s cooling system while preserving the vehicle s historical integrity.

### **Pros and Cons of Buying a 1959 1961 Chevrolet 3139134 (GM Delco 180 Thermostat, 158-P Engine)**

#### **Pros**

1. **Classic American Muscle Car Heritage**

The 1959 1961 Chevrolet lineup, particularly the Bel Air, Impala, and related models, represents the early days of American muscle cars. These cars are highly sought after by collectors and enthusiasts for their timeless design, cultural significance, and role in the evolution of automotive performance.

2. **Strong Engine Options (158-P Series)**

The **158-P engine** (a variant of the 283/327 small-block V8) was a reliable and capable powerplant for its time. The **Delco 180 thermostat** (a high-quality unit) suggests the owner or previous owner prioritized maintenance, which is a positive sign. These engines, when properly maintained, can still deliver strong performance, especially when modified or restored.

3. **Availability of Parts and Support**

As one of the most popular GM small-block V8 platforms, parts for these cars are widely available. Aftermarket support, including performance upgrades, restoration components, and classic car clubs, makes ownership more accessible than many older vehicles.

4. **Potential for Restoration or Daily Driving**

If the car is in need of restoration, the project can be rewarding and appreciating in value over time. Alternatively, if it s already restored or in good condition, it can serve as a fun, nostalgic daily driver or weekend cruiser.

5. **Investment Potential**

Well-preserved examples of these models, especially in original condition or with documented histories, can appreciate significantly in value, especially if they are rare variants (e.g., low-mileage, factory options, or concours-level restorations).

6. **Driving Experience**

The handling, suspension, and overall feel of a properly restored 1959 1961 Chevy are unmatched by modern cars in terms of raw driving enjoyment. The combination of a V8 engine, manual transmission (if equipped), and classic bodywork provides an engaging and satisfying experience.

---

#### **Cons**

1. **Age and Wear**

These cars are **over 60 years old**, meaning they will require significant maintenance, repairs, or restoration work. Rust, worn suspension, outdated electrical systems, and aging drivetrain components are common issues that can be costly to address.

2. **High Maintenance Costs**

Unlike modern cars, these vehicles often require specialized knowledge or skilled mechanics familiar with classic GM small-block engines. Labor costs for restoration or repair can be high, especially if parts need to be sourced from specialty suppliers.

3. **Fuel Efficiency and Modern Standards**

The **158-P engine** (and other V8s of this era) is not fuel-efficient by today s standards, averaging around **10 12 MPG** in a stock configuration. Running costs, including fuel, oil changes, and potential emissions compliance (if driven on the road), can add up.

4. **Reliability Concerns**

- **Rod bearing wear** (especially in high-mileage examples)

- **Valve train problems** (lifters, pushrods, or camshaft wear)

- **Transmission wear** (if not properly maintained)

- **Electrical system failures** (alternators, distributors, wiring)

- **Body rust** (especially in frame rails, floors, and wheel wells)

5. **Insurance and Registration Challenges**

Classic cars often have higher insurance premiums due to their value and potential repair costs. Additionally, some states or counties have strict regulations for vintage vehicles, including emissions testing or special registration fees.

6. **Limited Modern Comforts**

These cars lack modern safety features (airbags, ABS, stability control), advanced driver aids, and contemporary comforts (climate control, modern audio systems, etc.). Driving them may require more effort and attention than a modern vehicle.

7. **Depreciation Risk (If Not Restored Properly)**

Unless the car is in **excellent condition or restored to concours level**, its value may depreciate over time. Poorly maintained examples can become money pits with diminishing returns.

8. **Finding a Reliable Example**

Many of these cars have been modified, neglected, or stripped for parts. Even if you find a "good" one, verifying its history (originality, maintenance records, accident damage) can be difficult without a thorough inspection.

---

### **Conclusion and Recommendation**

#### **Who Should Buy This Car?**

- **Enthusiasts who enjoy restoration projects** and have the time, budget, and mechanical skills to bring it back to life.

- **Collectors who prioritize originality, rarity, or historical significance** over daily usability.

- **Drivers who value the experience of owning a piece of automotive history** and are willing to accept the challenges that come with it.

- **Those who plan to use it as a weekend cruiser or show car** rather than a primary vehicle.

#### **Who Should Avoid This Car?**

- **Beginners or those without mechanical experience**, as the learning curve for restoration can be steep.

- **Budget-conscious buyers**, as unexpected repairs can quickly add up.

- **People who prioritize modern convenience, safety, or fuel efficiency** over classic charm.

- **Those who cannot commit to long-term maintenance**, as neglect will accelerate deterioration.

#### **Final Recommendation**

1. You have **verified its condition through a professional inspection** (focus on engine, transmission, frame, and body rust).

2. You have **budgeted for restoration costs** (expect **$10,000 $50,000 ** depending on condition and scope of work).

3. You are **prepared for the time commitment** (restoration can take years).

4. You have **access to reliable mechanics or a network of classic car enthusiasts** for support.

If you find a **well-documented, low-mileage, restored example** (especially with originality), it can be a **fantastic investment** both emotionally and financially. However, if you re looking for a **reliable, low-maintenance vehicle**, this is **not the right choice**.

- **Start with a project car** (if you re learning) or a **restored example** (if you want immediate enjoyment).

- **Join classic Chevy clubs** (e.g., Chevy 283/327 owners groups) for advice and part sourcing.

- **Consider financing carefully**, as classic car loans often have higher interest rates.

Ultimately, this car is a **passion project** rather than a practical purchase buy it for the love of the machine, not just the machine itself.

Details:

This thermostat is designed to regulate engine cooling in Chevrolet vehicles from the specified years, providing a reliable and high-quality component for classic car enthusiasts collectors. The product is a NOS New Old Stock 180 degree thermostat made by GM Delco for Chevrolet vehicles from 1959 to 1961. It is a vintage part with the manufacturer number 3139134.

part #: 3139134 prices

• $14.92-$35.00

specifications ocoosys:

• for makes: Chevrolet
• for years: 1959
• mpn: 3139134
• part type: Thermostat
• vintage part: Yes

offer ocoosys:

• options: Ship-to-home
• availability: In Stock
• started: June 11, 2026
• quantity: 1
• sold: 0

seller ocoosys:

• # reviews: 2038
• rating: 99.7%
• city: Fairfax, Iowa

general ocoosys:

• condition: New
• Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components

shipping ocoosys:

• class: Standard
• transit: 2-5 Days
• type: Calculated
• service: USPS Ground Advantage
• cost: $0.00
• carrier: USPS

payments ocoosys:

• credit card: Diners-club
• wallet: Apple-pay
• other

returns ocoosys:

• time: 14 Days
• policy: Returns Accepted
• paid by: Buyer

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