1. Engine Crankshafts Products
  2. sku: 19251604039591741
  3. CADILLAC 1479702

CADILLAC 1479702 Crankcase Ventilator Breather Tube

fits make: Cadillac. year: 1963–1966.

1479702 Cadillac Oem 1963-1966 Crankcase Ventilator Breather Tube #1479702

( Manufacturer Part Number: 1479702 ), ( Part Type: Breather Tube ), ( Country Of Origin: United States )

Review CADILLAC Oem Crankcase Ventilator Breather Tube #1479702 fits 1963–1966

The **Cadillac 1479702 Crankcase Ventilator Breather Tube** from the 1963 1966 model years is a precision-engineered component designed to maintain optimal engine performance and longevity by effectively managing crankcase pressure. This essential part plays a critical role in the ventilation system of Cadillac s powerful V8 engines, ensuring that harmful blow-by gases resulting from piston ring wear and combustion byproducts are safely expelled from the crankcase while preventing oil leaks and contamination. Crafted from durable, heat-resistant materials, the breather tube is engineered to withstand the high temperatures and pressures inherent in high-performance engines, offering a reliable solution to prevent oil foaming, sludge buildup, and potential engine damage. Its unique design features a smooth, tapered interior that minimizes restriction while maximizing airflow, allowing for efficient gas evacuation without compromising engine vacuum. This component is particularly vital for maintaining proper oil circulation and preventing the ingress of unburned fuel or moisture, which can degrade lubricants and accelerate wear on critical engine components. Whether restoring a classic Cadillac or maintaining a well-preserved vintage vehicle, this breather tube ensures that the engine operates at peak efficiency, preserving its performance and extending its lifespan. Its compatibility with the 1963 1966 Cadillac lineup including models like the Eldorado, DeVille, and Fleetwood makes it an indispensable part for enthusiasts seeking to uphold the legendary reliability of these iconic American powerhouses.

The **Cadillac 1479702 crankcase ventilator breather tube** (part of the Positive Crankcase Ventilation, or PCV, system) is a critical component for maintaining engine health in 1963 1966 Cadillac models. Below are the key pros and cons of purchasing this part, followed by a conclusion and recommendation.

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### **Pros of buying a Cadillac 1479702 Crankcase Ventilator Breather Tube**

1. **Prevents Engine Oil Contamination**

The PCV system routes blow-by gases (unburned fuel and combustion byproducts) away from the crankcase, preventing oil dilution and sludge buildup. A faulty or missing breather tube allows these gases to circulate inside the engine, accelerating wear and reducing performance.

2. **Reduces Emissions and Improves Efficiency**

The breather tube directs harmful gases to the intake manifold, where they are burned in the combustion chamber rather than being expelled directly into the atmosphere. This helps maintain compliance with early emissions standards and keeps the engine running cleaner.

3. **Simple and Affordable Replacement**

The part is inexpensive (typically under $20) and straightforward to install, requiring minimal tools. Most mechanics or DIYers can replace it in under an hour.

4. **Extends Engine Lifespan**

By controlling crankcase pressure, the breather tube reduces stress on seals, gaskets, and the valve train. A failing PCV system can lead to oil leaks, valve cover gasket failure, or even catastrophic engine damage over time.

5. **Easy to Diagnose Issues**

Symptoms of a failing breather tube (excessive oil consumption, blue smoke from the exhaust, or a hissing sound near the valve cover) are clear indicators that replacement is needed. Unlike some engine components, this part doesn t require advanced diagnostics.

6. **OEM Quality (When Purchased from a Reputable Source)**

The original Cadillac part is designed to fit perfectly and perform as intended. Aftermarket alternatives may vary in quality, but genuine OEM parts ensure reliability.

7. **Prevents Further Damage**

Ignoring a failing breather tube can lead to more expensive repairs down the line, such as replacing the valve cover gasket, oil pump, or even the entire engine in severe cases.

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### **Cons of buying a Cadillac 1479702 Crankcase Ventilator Breather Tube**

1. **Potential for Counterfeit or Low-Quality Parts**

Some aftermarket or online sellers may offer fake or substandard replicas. A poorly made breather tube could fail prematurely or even worsen emissions issues if it doesn t seal properly.

2. **Misdiagnosis of Symptoms**

If the issue isn t the breather tube (e.g., a clogged oil filter, worn piston rings, or a failing PCV valve), replacing just the tube won t solve the underlying problem. A thorough inspection is necessary to rule out other causes of oil consumption or blue smoke.

3. **Installation Mistakes**

If the tube isn t connected correctly (e.g., reversed or kinked), it can fail to function properly. Improper installation may require redoing the job, wasting time and effort.

4. **Limited Lifespan (If the Rest of the PCV System is Failing)**

The breather tube itself may last indefinitely, but if the PCV valve (a separate component) is clogged or stuck, the system will still malfunction. Replacing just the tube without addressing the valve won t fully restore function.

5. **Environmental Concerns (If the System is Bypassed)**

In older cars, some owners may disable the PCV system entirely to reduce emissions checks or improve performance. While this can temporarily alleviate issues, it leads to oil contamination and long-term engine damage.

6. **Availability of Aftermarket Alternatives**

While aftermarket breather tubes exist, they may not be as durable or precisely fitted as the OEM part. Cheaper alternatives might fail sooner, requiring more frequent replacements.

7. **Time-Consuming for Some Owners**

While the replacement is simple, those unfamiliar with engine maintenance may find it intimidating. If the owner lacks mechanical experience, hiring a mechanic could add to the cost.

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### **Conclusion**

The **Cadillac 1479702 crankcase ventilator breather tube** is a **highly recommended and cost-effective** part to replace if your 1963 1966 Cadillac exhibits symptoms of a failing PCV system (oil leaks, excessive oil consumption, or blue exhaust smoke). The benefits preventing engine damage, improving efficiency, and extending lifespan far outweigh the minor drawbacks, which are largely avoidable with proper sourcing and installation.

The biggest risks (counterfeit parts, misdiagnosis, or installation errors) can be mitigated by:

- Purchasing from a trusted supplier (e.g., RockAuto, Summit Racing, or a local auto parts store with a return policy).

- Verifying the symptoms before replacement (e.g., checking for oil leaks, testing the PCV valve).

- Following the installation instructions carefully.

If the engine is running poorly despite replacing the breather tube, further diagnostics (e.g., checking the PCV valve, valve cover gasket, or piston seals) may be necessary.

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### **Final Recommendation**

**Buy the Cadillac 1479702 crankcase ventilator breather tube** if:

- Your car shows signs of a failing PCV system (oil consumption, blue smoke, or a hissing noise near the valve cover).

- You are confident in the part s authenticity (preferably OEM or a high-quality aftermarket equivalent).

- You are willing to perform a simple replacement or have a mechanic do it.

**Do not delay replacement** if symptoms are present, as the long-term consequences (engine damage, costly repairs) far exceed the minimal cost and effort of fixing it now. If in doubt, consult a mechanic to confirm the issue before purchasing.

Details:

I sell used parts, and therefore all parts may have imperfections as would be expected from a part, such scratches, wear, etc. Please look at all pictures and/or videos and ask questions prior to purchasing be sure the item you are is correct part. This OEM crankcase ventilator breathing tube was sandblasted and painted Cadillac Dark Blue. Tube is in very good condition, no major pitting, rot.

OEM 1963-1966 CADILLAC. The list goes on. Keeping the Classics Alive. What you see in the pics is what get.

What you see in the pictures is what get.

part #: 1479702 price

  • $94.99

specifications cranshafengin:

  • for makes: Cadillac
  • for years: 1963-1966
  • mpn: 1479702
  • part type: Breather Tube
  • country of origin: United States

general cranshafengin:

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

returns cranshafengin:

  • policy: No Returns

offer cranshafengin:

  • started: March 10, 2026
  • sold: 0
  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock

shipping cranshafengin:

  • type: Fixed
  • transit: 3-7 Days
  • cost: $15.99
  • service: USPS Ground Advantage
  • carrier: USPS
  • class: Standard

payments cranshafengin:

  • other
  • credit card: Mastercard
  • wallet: Apple-pay

seller cranshafengin:

  • rating: 100.0%
  • # reviews: 4614
  • city: Kenilworth, New Jersey
for makes: cadillac, for years: 1963-1966, part type: breather tube, country of origin: united states,
category: auto parts > car truck parts accessories > engines engine parts > crankshafts, sku: 19251604039591741,
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1 offer $94.99 USD
  • Used. Offer #1 priced at $94.99 + $15.99 shipping estimate = $110.98* total. What you see in the pictures is what you get. CRANKCASE VENTILATOR.+$15.99 shipping

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