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  3. PORSCHE 92810521402

PORSCHE 92810521402 Timing Chain Tensioner Oil Line 5/8

fits make: Porsche. year: 1985.

92810521402 Porsche Excellent Used Original 928 5-8 Cyl Timing Chain Tensioner Oil Line 1985

( Manufacturer Part Number: 92810521402 ), ( Part Type: Timing Oil Line Chain ), ( Vintage Part: Yes ), ( Country Of Origin: Germany )

Review PORSCHE Excellent Used Original 5-8 Cyl Timing Chain Tensioner Oil Line fits 928 1985

The **Porsche 928 Timing Chain Tensioner Oil Line (Part Number: 10521402)** from the **1985 model year (Generation 1, 5.0L/5.4L air-cooled engine)** is a critical, high-performance component designed to ensure precise timing chain tension and optimal lubrication within the engine s complex valvetrain system. This meticulously engineered part is integral to maintaining the legendary reliability and performance of the Porsche 928 s air-cooled, flat-eight architecture, which relies on a dual overhead camshaft setup with a single timing chain driving both camshafts. The tensioner oil line, often overlooked in maintenance but indispensable in function, delivers pressurized oil directly to the hydraulic tensioner, which dynamically adjusts chain slack to prevent slippage, chain wear, or catastrophic failure particularly under high RPM or aggressive driving conditions. Crafted from durable materials and engineered to Porsche s exacting standards, this component is built to withstand the demanding thermal and mechanical stresses of the 928 s high-revving engine, where even minor misalignments can lead to significant power loss or engine damage. For restoration or maintenance projects, this genuine part ensures compatibility with the original 1985 928 s specifications, including the 5.0L (2996cc) or 5.4L (3054cc) engines, and is a direct replacement for the factory-installed unit, complete with the correct oil feed port threading and sealing surfaces. Whether addressing a worn tensioner, replacing a failed oil line, or upgrading as part of a thorough engine rebuild, this part guarantees seamless integration with the engine s lubrication system, preserving the 928 s iconic blend of brute torque and smooth, linear power delivery. Its inclusion in any high-quality restoration or performance modification is essential for maintaining the engine s longevity and adherence to Porsche s engineering legacy.

### **Pros and Cons of Buying a Porsche 928 (1985) with a Faulty Timing Chain Tensioner Oil Line**

#### **Pros**

1. **Classic Porsche Engineering** The 928 is a rare and well-regarded luxury grand tourer with a powerful V8 engine (initially 5.0L, later 5.4L), offering a balance of performance and comfort. Its design, build quality, and driving dynamics remain highly sought after among enthusiasts.

2. **Strong Resale Value** As a limited-production Porsche from the mid-1980s, the 928 holds its value better than many contemporaries, especially well-maintained examples. Collectors and restorers often seek out these cars.

3. **Potential for Restoration** If the car is structurally sound and the engine can be rebuilt, a restored 928 can become a highly desirable project or show car. The aftermarket supports classic Porsche parts and modifications.

4. **Unique Driving Experience** The 928 s rear-wheel-drive layout, manual transmission option (in early models), and smooth power delivery provide a refined yet engaging driving experience that is distinct from modern sports cars.

5. **Availability of Parts** While some components are rare, Porsche and third-party suppliers still offer parts for the 928, particularly for common failures like the timing chain tensioner oil line.

6. **Potential for Modifications** The 928 s engine can be upgraded with aftermarket parts (e.g., turbocharging, fuel injection improvements) to increase power, though this requires mechanical expertise.

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#### **Cons**

1. **Timing Chain Tensioner Oil Line Failure** The most critical issue in this 1985 928 is the timing chain tensioner oil line, which can leak or fail, leading to engine damage if the timing chain jumps. This is a known weakness in early 928 models (pre-1988) and requires immediate attention.

2. **High Repair Costs** Replacing or repairing the timing chain tensioner oil line is expensive, often costing **$1,500 $3,000 ** depending on labor and parts. Additional engine work (e.g., valve train inspection, chain replacement) may be necessary.

3. **Rust and Structural Issues** Many 928s from the 1980s suffer from rust, particularly in the subframe, suspension components, and body panels. A thorough inspection is essential to avoid hidden corrosion problems.

4. **Electrical and Computer Reliability** The 928 s early electronic systems (fuel injection, ignition, ABS) can be finicky and may require updates or replacements. The 1985 model predates some of Porsche s later refinements in electronics.

5. **Maintenance Intensity** The V8 engine, while robust, demands regular attention to oil changes, cooling system maintenance, and suspension tuning. Neglect can lead to costly failures.

6. **Limited Daily Usability** While the 928 is comfortable, its size, weight, and fuel consumption (especially in automatic models) make it less practical for daily driving compared to modern cars. Insurance and parking can also be challenges.

7. **Project Car Potential** If the car is not already restored, the time and effort required to bring it to showroom condition can be significant. Many owners underestimate the scope of work needed.

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### **Conclusion**

Buying a **1985 Porsche 928 with a faulty timing chain tensioner oil line** is a high-risk, high-reward proposition. The car s classic status and engineering make it appealing, but the **timing chain tensioner issue is non-negotiable** it must be addressed immediately to prevent catastrophic engine failure. If you are mechanically inclined or have access to a trusted Porsche specialist, this could be a worthwhile investment for restoration or modification. However, if you are not prepared for the **financial and labor-intensive repairs**, the risks outweigh the rewards.

For a **safe purchase**, prioritize a car with:

- A **verified timing chain tensioner oil line replacement** (preferably with a new chain and tensioner).

- A **full mechanical inspection**, including engine, transmission, suspension, and rust checks.

- **Documentation of past maintenance** to ensure the car hasn t been neglected.

If the seller cannot provide proof of the oil line repair or the car has other major issues, it is better to **pass on the purchase** unless you are buying it as a **long-term project** with a clear budget for repairs.

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### **Recommendation**

- **If you are a serious Porsche enthusiast with mechanical skills and budget:** This could be a great project car, especially if you find one with the timing chain issue already fixed. Focus on **structural integrity, engine condition, and electronics reliability**.

- **If you are a casual buyer or not prepared for repairs:** Avoid this car unless the timing chain tensioner is **guaranteed to be in perfect condition** and all other major systems are verified.

- **Alternative Approach:** Consider a **later-model 928 (1988 )** or a **944 Turbo**, which are more practical and have fewer known reliability issues.

Ultimately, the 928 is a **fantastic car for the right owner**, but the **timing chain tensioner oil line failure is a dealbreaker** unless resolved. Always **inspect thoroughly or have a professional verify the condition** before committing.

Details:

Please see pictures. Here is a very nice used original genuine Porsche chain tensioner oil line as in the 5-8 cylinder head on 1985 928 model's. This unit has 8mm banjo rings on both ends. No surprises here.

This can be shipped anywhere worldwide. Weir spreeing Porsche.

part #: 92810521402 price

  • $20.00

specifications cylinderheapar:

  • for makes: Porsche
  • for years: 1985
  • mpn: 92810521402
  • part type: Timing Oil Line Chain
  • vintage part: Yes
  • country of origin: Germany

seller cylinderheapar:

  • # reviews: 36533
  • rating: 99.9%
  • city: Springfield, Vermont

general cylinderheapar:

  • condition: Used
  • Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads

returns cylinderheapar:

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

offer cylinderheapar:

  • quantity: 2
  • options: Ship-to-home
  • started: March 18, 2026
  • sold: 0
  • availability: In Stock

payments cylinderheapar:

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

shipping cylinderheapar:

  • carrier: USPS, FedEx
  • cost: $8.30
  • service: USPS Ground Advantage, FedEx Ground / FedEx Home Delivery, USPS Priority Mail Express
  • class: Standard, Expedited
  • type: Calculated
  • transit: 3-9 Days
for makes: porsche, for years: 1985, part type: timing oil line chain, vintage part: yes, country of origin: germany,
category: auto parts > car truck parts accessories > engines engine parts > cylinder heads, sku: 11757760427512782,
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1 offer $20.00 USD
  • Used. Offer #1 priced at $20.00 + $8.95 shipping estimate = $28.95* total. Wir sprechen Porsche! Here is a very nice used original genuine Porsche chain tensioner oil line as used in the 5-8 cylinder head on 1985 928 models.+$8.95 shipping

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