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Your Vehicle // Porsche // 928 (1978-1995) // 928GT 5.0L 1989-91
Breather Pipes
from Intake Plenum to MAFS connector.
Fits:
Porsche 928 1987-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 26
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810731302
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
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12 Month Warranty
Worldwide Delivery
Engine crankcase breather hose by OE Match for Porsche 928, it connects the intake plenum with the MAFS connector as part of the engine ventilation system.
Fits
- Porsche 928 1987-95
Check fitment for your specific vehicle (model, year, engine) before ordering.
What This Product Does
The hose provides a passage for crankcase gases and oil vapour within the breather circuit. An intact connection helps the ventilation system manage crankcase pressure without allowing vapour to escape through damaged hose walls or loose joints.
Functions
- Routes gases through the crankcase ventilation circuit.
- Maintains a sealed connection between the specified fittings.
- Supports crankcase pressure management.
Technical Details
- Brand: OE Match.
- Product reference: 92810731302.
- Connection route: intake plenum to MAFS connector.
Symptoms of Fault
Inspect the hose for splits, hardened sections, deformation or oily deposits around its connections. Breather leaks can also accompany hissing, an unsettled idle or exhaust smoke, although these symptoms require diagnosis rather than confirming a hose fault on their own.
Why Replacement Matters
Renewing a cracked, leaking or collapsed hose helps restore the intended ventilation path. During replacement, examine adjoining connections and retaining clips: deterioration elsewhere in the circuit can leave a leak unresolved. OE Match develops replacement components around Porsche applications, with specification checks and sample evaluation forming part of its development process.
FAQs
- Does exhaust smoke confirm a failed breather hose?
No. Ventilation faults are one possible explanation, but oil level and other engine-related causes should also be investigated. - Should nearby hoses be inspected?
Yes. Components exposed to similar heat and age may show comparable deterioration, so inspect them before completing the repair. - How can a suspected leak be checked?
Begin with a visual inspection of the hose and joints. A workshop smoke test can help locate leaks that are difficult to see.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810731302
The product you are viewing cross references to these numbers
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 928 - 1978 to 1986
Porsche 924 - 1976 to 1986
Porsche 924S - 1986 to 1988
Porsche 944 - 1982 to 1991
Porsche 968 - 1992 to 1995
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99951255400
The product you are viewing cross references to these numbers
- Porsche 924 2.0L 1976-79
- Porsche 924 2.0L 1980-85
- Porsche 924 Turbo 2.0L 1979-81
- Porsche 924 Turbo 2.0L 1982-84
- Porsche 924 Carrera GT 2.0L 1981
- Porsche 924 Carrera GTS 2.0L 1982
- Porsche 924S 2.5L 1986-87
- Porsche 924S 2.5L 1988
- Porsche 944 2.5L 8V 1982-87
- Porsche 944 2.7L 8V 1988-89
- Porsche 944S 2.5L 16V 1987-88
- Porsche 944S2 3.0L 16V 1989-91
- Porsche 944 Turbo 2.5L 8V 1985-88
- Porsche 944 Turbo 2.5L 8V 1989-91
- Porsche 944 Turbo S 2.5L 8V 1988
- Porsche 968 3.0L 1992-94
- Porsche 968 Sport 3.0L 1994-95
- Porsche 968 CS 3.0L 1993-95
- Porsche 968 Turbo S 3.0L 1993-94
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Shop Securely
12 Month Warranty
Worldwide Delivery
Engine Oil System Breather Pipes – Precision Ventilation for Porsche Performance
The engine oil breather system plays a crucial role in maintaining internal pressure balance, oil circulation, and overall engine health. The breather pipes allow gases, vapour, and excess pressure to escape from the crankcase, preventing oil contamination, leaks, and performance loss.
At Design911, we supply a comprehensive selection of oil system breather pipes and ventilation components designed for Porsche engines across all generations. Built from high-quality, oil- and heat-resistant materials, our breather pipes are engineered for long service life, durability, and a direct-fit installation — ensuring your Porsche continues to run smoothly under all driving conditions.
Whether you’re maintaining a daily-driven 911 or restoring a classic air-cooled model, our breather pipes help safeguard your engine’s lubrication system and performance.
What Do Engine Oil Breather Pipes Do?
Oil breather pipes are essential to the proper function of your Porsche’s oil system. They manage pressure and vapour within the crankcase, ensuring oil flow remains consistent and clean.
Core Functions:
- Vent
crankcase pressure to maintain oil system stability.
- Prevent
oil leaks by balancing internal engine pressure.
- Reduce
contamination by separating oil vapour from blow-by gases.
- Improve efficiency by maintaining clean airflow and optimal oil return.
Properly functioning breather pipes ensure your Porsche’s engine stays free of excessive pressure and sludge build-up, promoting smooth operation and extended engine life.
Why Do Oil Breather Pipes Fail?
Over time, breather pipes are exposed to intense heat, oil vapour, and pressure changes that can cause deterioration and leaks.
Common Causes of Failure Include:
- Cracking
or hardening of rubber or plastic due to heat cycles.
- Oil
residue build-up, leading to restricted airflow.
- Blockages
caused by sludge or carbon deposits.
- Loose
fittings or seals allowing air or oil leaks.
- Age-related wear in high-mileage or older engines.
Symptoms of failing breather pipes include oil leaks, rough idling, increased crankcase pressure, or smoke from the exhaust — all signs that the ventilation system is compromised.
Why Replace with Precision-Engineered Breather Pipes?
Replacing worn or damaged breather pipes is essential for maintaining optimal oil pressure and engine performance. Our precision-fit, high-durability replacements are designed to restore proper ventilation and prevent costly oil-related issues.
Key Benefits:
- Restores optimal crankcase ventilation and pressure control.
- Prevents oil leaks and blow-by contamination.
- Improves idle stability and engine efficiency.
- Constructed from heat- and oil-resistant materials.
- Direct-fit
compatibility for classic and modern Porsche engines.
- Ideal for regular maintenance or full engine rebuilds.
These parts are engineered to deliver long-term reliability and protect your Porsche’s engine from unnecessary wear.
Highlights:
- Precision-engineered oil breather pipes for Porsche engines.
- High-quality
materials for maximum durability and heat resistance.
- Direct-fit
replacements ensuring leak-free performance.
- Improves oil system efficiency and longevity.
- Compatible with air-cooled and water-cooled Porsche models.
- Perfect for rebuilds, maintenance, or performance upgrades.
Monday-Friday: 8.30am - 5.30pm (GMT)
Saturday: Closed
Sunday: Closed