1. Exhaust & Emission Parts To Buy
  2. sku: 20859475808416762
  3. FORD C5TZ-6758-C

FORD C5TZ-6758-C Crankcase Pcv Vent Tube 6-CYL

fits model: F100, F250, F350, 300. make: Ford. year: 1965–1966.

C5tz-6758-c Fomoco Oem Ford 1965-1966 F100 F250 F350 300 6-cyl Crankcase Pcv Vent Tube

( Manufacturer Part Number: C5TZ-6758-C ), ( Part Type: Vent Tube )

Review FORD Fomoco Oem 6-cyl Crankcase Pcv Vent Tube fits F100 F250 F350 300 1965–1966

The **C5TZ-6758-C** is a meticulously engineered Positive Crankcase Ventilation (PCV) vent tube designed specifically for Ford s legendary **1965 1966 F-Series trucks**, including the **F-100, F-250, F-350, and the rare 300 series**, all of which were powered by the iconic **302 cubic-inch inline-six engine (Ford s "302 six")**. This critical component plays a vital role in maintaining engine cleanliness and performance by controlling the flow of blow-by gases unburned fuel and combustion byproducts that escape past the piston rings back into the intake manifold, where they are safely recirculated and burned again. Crafted from high-quality **black rubber with reinforced nylon or brass fittings**, the C5TZ-6758-C ensures a secure, leak-free connection to the **crankcase vent valve** and **intake manifold**, preventing oil dilution, carbon buildup, and potential engine damage over time. Its precise fitment is tailored to the **Ford 302 six-cylinder s unique crankcase design**, where the PCV system was a pioneering feature in its day, designed to reduce emissions and improve engine longevity a forward-thinking solution that still holds relevance for restorers and enthusiasts seeking authenticity or reliability. Whether installed in a meticulously restored classic truck, a high-mileage daily driver, or a project vehicle aiming for factory-correct operation, this vent tube is an essential part of preserving the engine s original functionality while contributing to smoother operation and reduced internal wear. Its straightforward yet effective design underscores Ford s engineering prowess of the mid-1960s, making it a must-have replacement for those who demand both performance and period accuracy.

The **1965-1966 Ford F-Series (F100, F250, F350, 300)** with a **6-cylinder engine (223 CID or 272 CID)** and the **C5TZ-6758 crankcase PCV vent tube** is a classic truck with distinct advantages and drawbacks. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Classic Ford Reliability (When Maintained Properly)**

- The **223 CID (2V) and 272 CID (2V) six-cylinder engines** from this era were built to last if given proper care. Many still run today with minimal modifications.

- Ford s **early 1960s truck platforms** (F-100, F-250, F-350) were designed for durability, with simple, robust drivetrain components like the **Ford 9-inch rear end** and **Ford 180-degree rear axle**.

- The **crankcase PCV vent tube (C5TZ-6758)** is a standard Ford part, meaning replacements and maintenance are widely available.

2. **Strong Resale Value for Classics**

- Well-preserved **1965-1966 F-Series six-cylinder trucks** hold value, especially in the **restomod and classic truck market**. A properly restored example can sell for **$15,000 $30,000 **, depending on condition and rarity.

- The **300 series (heavy-duty)** and **F-350 models** are particularly sought after by collectors.

3. **Simplicity & Ease of Maintenance**

- Compared to modern trucks, these engines and transmissions are **relatively simple to work on**, making DIY repairs more accessible.

- **No complex electronics** mechanical fuel pumps, distributor-based ignition, and manual transmissions (if equipped) are easier to troubleshoot than modern fuel-injected systems.

- **No turbocharging or high-performance modifications needed** these trucks were built for **hauling and towing**, not speed, making them ideal for **agricultural, farm, or off-grid use**.

4. **Off-Road & Utility Potential**

- The **rigid axle setup** (no independent suspension) and **heavy-duty frame** make these trucks **extremely capable for off-road use**, especially with aftermarket lifts or heavy-duty suspension.

- The **272 CID engine** (in later models) produces ** 150 170 HP**, which is sufficient for **light-duty towing (up to 5,000 7,000 lbs with proper setup)**.

- **No modern emissions restrictions** you can modify or run them with minimal legal concerns (though some states have classic vehicle exemptions).

5. **Aesthetic & Customization Appeal**

- The **retro Ford styling** (especially the **1965 1966 models**) is highly desirable for **restomod builds**, allowing for **custom paint, chrome, or modern performance upgrades**.

- **Easy to modify** you can swap in a **modern transmission, suspension, or engine** (e.g., a **302 V8 swap**) while keeping the original frame and body.

- **No modern tech bloat** unlike today s trucks, these have **no unnecessary electronics**, making them **simpler to modify for off-road or utility use**.

6. **Fuel Efficiency (For a Truck of Its Era)**

- While not modern-efficient, the **223 CID and 272 CID engines** get **better mileage than a V8** (expect **10 15 MPG** in a well-tuned condition).

- **Cheaper fuel costs** compared to modern diesel or turbocharged engines.

7. **Historical & Nostalgia Value**

- For enthusiasts, owning a **1965 1966 Ford six-cylinder truck** is a **piece of automotive history**, especially if it s **original or restored to factory condition**.

- The **PCV vent tube (C5TZ-6758)** is a **common but essential part** replacing it ensures proper crankcase ventilation, preventing oil leaks and engine damage.

---

### **Cons**

1. **High Maintenance Requirements**

- **Older engines (223/272 CID) are prone to wear** **valve train issues, head gasket leaks, and rod bearing failures** are common if the truck hasn t been maintained.

- **No modern emissions controls** running them without proper **PCV, carburetor tuning, or exhaust modifications** can lead to **oil consumption, sluggish performance, or even engine damage**.

- **Transmissions (especially the 3-speed manual or 4-speed overdrive)** can be **leaky or worn**, requiring frequent fluid changes and potential rebuilds.

2. **Poor Fuel Economy & Performance**

- **No turbocharging or modern fuel injection** expect **low MPG (8 12 MPG in real-world use)** and **weak acceleration** compared to today s trucks.

- **Towing capacity is limited** even the **F-350 272 CID** struggles with **heavy loads** (modern diesel F-350s tow **20,000 lbs** with ease).

- **No modern power steering or automatic transmissions** manual steering and **3-speed manuals** are **harder to drive** in today s traffic.

3. **Rust & Frame Issues**

- **1965 1966 trucks were not built for extreme climates** **rust in the frame, suspension, and fuel tank** is a **major concern**, especially in **snowy, salty, or humid areas**.

- **Original frames may be weakened** some require **welding or replacement** to ensure safety.

- **No modern corrosion protection** unlike today s trucks, these were not treated with **rust-proofing coatings**.

4. **Limited Modern Compatibility**

- **No OBD-II or modern diagnostics** troubleshooting issues requires **mechanical knowledge and old-school tools**.

- **Harder to find modern parts** while Ford parts are available, **sensors, injectors, and electronics** (if modified) may require **aftermarket or custom solutions**.

- **No modern safety features** **no ABS, traction control, or airbags** (if equipped, they may be **basic or non-functional**).

5. **Driving Experience Can Be Harsh**

- **Rigid axle suspension** leads to a **bumpy ride** compared to modern independent suspensions.

- **No power steering** (unless modified) makes **parking and maneuvering difficult**.

- **Manual transmissions** (if equipped) are **harder to drive in stop-and-go traffic**.

6. **Insurance & Registration Challenges**

- **Classic truck insurance is expensive** expect **$1,000 $3,000 per year** depending on coverage.

- **Some states have restrictions on pre-1975 vehicles** check local **emissions and safety regulations** before purchasing.

- **Not ideal for daily driving** these trucks are **better suited for weekends, towing, or off-road use** rather than commuting.

7. **Engine & Drivetrain Limitations**

- **No modern engine options** if the six-cylinder fails, **swapping in a V8 (e.g., 302, 351W, or 460)** is common, but this adds **weight and complexity**.

- **No modern transmission options** while **4-speed automatics (like the C6 or C7) can be installed**, they require **modifications and tuning**.

- **No turbocharging or forced induction** if you want **more power, you re limited to carburetor tuning or mechanical upgrades**.

8. **Parts & Labor Costs Can Be High**

- **While parts are available, some are expensive** **rebuilt engines, transmissions, and axles** can cost **$2,000 $5,000 **.

- **Labor costs for classic trucks are higher** mechanics may charge **more for specialized work** on older models.

- **No dealer support** you re **on your own** for repairs, unlike modern Ford dealerships.

---

### **Conclusion**

The **1965 1966 Ford F-Series (F100, F250, F350, 300) with a six-cylinder engine and C5TZ-6758 PCV vent tube** is a **fantastic choice for:**

- **Enthusiasts who love classic trucks and don t mind maintenance.**

- **Off-roaders and utility users** who prioritize **durability over modern convenience.**

- **Restomod builders** who want a **retro Ford chassis for customization.**

- **Those who enjoy the nostalgia** of pre-emissions-era trucks.

However, it is **not ideal for:**

- **Daily drivers** who need **comfort, fuel efficiency, and modern safety.**

- **People who want low-maintenance,

Details:

Confirmed Fitment: Years: 1965, 1966. Manufacturer: Ford Motor Company OEM. As shown in the photos, original Ford identification tag is still attached. Material: Authentic pre-bent metal tubing with correct factory fittings.

Up for sale is a Genuine Ford New Old Stock NOS Crankcase Vent Tube, part number C5TZ-6758-C. This metal vent tube is critical for the proper functioning of Positive Crankcase Ventilation PCV system. It may show minor shelf wear consistent with its age, but it remains uninstalled and functional. Condition: New Old Stock NOS.

Please verify your specific engine configuration before purchasing. It directs oil vapors and blow-by gases from the crankcase back into intake to be burned, preventing pressure buildup that can cause gasket leaks engine performance issues. This is an original factory part, not a modern reproduction, making it must-have for any high-quality 1965 1966 Ford F-Series truck restoration. Product Specifications: Part Number: C5TZ-6758-C.

part #: c5tz6758 prices

  • $34.95-$75.00

specifications emissyste:

  • for models: F100, F250, F350, 300
  • for makes: Ford
  • for years: 1965-1966
  • mpn: C5tz-6758-c
  • part type: Vent Tube

offer emissyste:

  • sold: 0
  • quantity: 1
  • best offers: True
  • started: March 20, 2026
  • availability: In Stock
  • options: Ship-to-home

general emissyste:

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

returns emissyste:

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

shipping emissyste:

  • carrier: USPS, UPS
  • transit: 4-10 Days
  • service: USPS Ground Advantage, USPS Priority Mail, UPS Ground
  • cost: $8.10
  • class: Standard, Expedited
  • type: Calculated

payments emissyste:

  • wallet: Google-pay
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  • credit card: Diners-club

seller emissyste:

  • rating: 99.9%
  • city: Piedmont, South Carolina
  • # reviews: 5974
for models: f100, f250, f350, 300, for makes: ford, for years: 1965-1966, part type: vent tube,
category: auto parts > car truck parts accessories > exhaust emission systems > exhaust emission parts, sku: 20859475808416762,
Ford C5TZ-6758 Is Similar To:
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2 offers $34.95–$75.00 USD
  • New other (see details). Offer #1 priced at $34.95 + $8.75 shipping estimate = $43.70* total. This is an original factory part, not a modern reproduction, making it a must-have for any high-quality 1965 1966 Ford F-Series truck restoration. It directs oil vapors and blow-by gases from the crankcase back into the intake to be burned, preventing pressure buildup that can cause gasket leaks and engine performance issues.+$8.75 shipping
  • New. Offer #2 priced at $75.00 + $15.00 shipping estimate = $90.00* total. Buyer to pay $15.00 shipping This vent tube is new with the Ford tag and it is in great shape.+$15.00 shipping

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