Guide to the 2006-2013 Volvo C70 Engine Crankcase Breather Hose
Understanding the role of the crankcase breather hose and how to choose the right replacement for your C70's T5 engine.
- A loud whistling noise that stops when you pull the oil dipstick is a tell-tale sign of a failed PCV system.
- It is highly recommended to replace the entire PCV system (oil trap and all hoses) rather than just a single failed hose, as other components are likely also brittle and failing.
- While budget brands like URO Parts and Professional Parts Sweden are available, forum feedback suggests they have a high failure rate for rubber and plastic components; OEM or reputable aftermarket kits are a safer bet.
- A faulty PCV system can cause a P0171 lean code and Check Engine Light due to unmetered air entering the intake.
Is Your Breather Hose Failing? Common Symptoms
The crankcase ventilation system on the Volvo T5 engine is a common maintenance item. The plastics and rubber used in the hoses become brittle over time due to constant heat and oil vapor exposure. When the main breather hose or other parts of the system fail, you'll notice distinct symptoms.
A Note on the Volvo PCV System: The breather hose is just one part of a larger system. Often, a clogged oil trap (PCV box) is the root cause of problems. High pressure from a clog can cause a whistling noise or even blow out engine seals. While replacing a single broken hose might seem like a quick fix, most experienced mechanics recommend replacing the entire PCV system (oil trap and all related hoses) at the same time, especially on higher-mileage vehicles.
Choosing the Right Aftermarket Part
When shopping for a new breather hose, you'll find several aftermarket options. Quality can vary, so it's important to understand the differences.
- Gates: Gates is a well-known and generally respected brand in the aftermarket for rubber components like hoses and belts. They are often considered a reliable alternative to OEM parts.
- Professional Parts Sweden (PPS): Despite the name, owner feedback on PPS is mixed. Some users find their parts to be of questionable or poor quality, with issues like incorrect fitment or premature failure. It is generally considered a budget-friendly option, but potentially less reliable.
- URO Parts: URO is another budget-focused brand. Forum discussions frequently describe their rubber and plastic parts as low quality, sometimes failing shortly after installation. While the low price is appealing, it may not be a long-term solution.
Pro Tip: For a critical system like the PCV, investing in a quality part is wise. While a simple hose from a budget brand might work temporarily, many owners recommend using either a Genuine Volvo part or a complete kit from a reputable Volvo specialist to ensure longevity and prevent future headaches.
Replacement Cost
The cost to replace your breather hose can vary. If you're only replacing the hose, the job is simpler. However, if you replace the entire PCV system, which is often recommended, the labor cost will be higher as it requires removing the intake manifold.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Breather Hose (Part Only) | $24.60 - $56.92 |
| New OEM Breather Hose (Part Only) | $45 - $70 |
| Full Aftermarket PCV System Kit (Parts Only) | $65 - $150 |
| Shop Labor (Full PCV System Replacement) | $280 - $500+ |
Frequently Asked Questions (FAQ)
What is the most common sign of a PCV system failure on the C70?
A loud whistling or squealing noise at idle is a very common symptom. This sound is caused by high crankcase pressure escaping. You can often confirm this by pulling the oil dipstick slightly; if the noise stops, the PCV system is almost certainly the culprit.
Can I just replace the hose that is broken?
You can, but it's often not recommended as a long-term fix. The hoses become brittle with age, so if one has failed, others are likely to fail soon. Furthermore, a clogged oil trap is often the underlying cause of the hose failure. Replacing just the hose without addressing a clogged trap can lead to repeated failures.
Is replacing the crankcase breather hose a DIY job?
Replacing just the upper hose can be done by a DIYer with basic tools. However, replacing the entire PCV system, including the oil trap, is more involved as it requires removing the intake manifold. While manageable for an experienced home mechanic, it can be a challenging job.
Are there any recalls for the PCV system on the 2006-2013 Volvo C70?
A search of the NHTSA database did not reveal any specific recalls for the engine crankcase breather hose or PCV system for this vehicle. Recalls found were for unrelated issues on different models or years.
Technical Specifications
OEM Part Numbers: 8670008 8653344 8692217
This is the upper breather hose that connects to the PCV oil trap/filter housing on the 2.5L 5-cylinder turbocharged engine.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Volvo C70: