YUGO/ZASTAVA 306-58507 Cylinder Head Bolts Gv 1.1L 12MM

( Brand: Yugo/zastava ), ( Part Type: Cylinder Head Bolt ), ( Genuine Oem: Yes ), ( Ipn: 306-58507 )

Review YUGO/ZASTAVA Cylinder Head 1.1l 12mm Bolts Gv fits 1986–1989

The **Yugo/Zastava 306 58507 cylinder head (1.1L, 86-89 GV model)** is a meticulously engineered component designed to deliver reliable performance and durability for the iconic 1.1-liter inline-four engine found in the Yugo 306 and its Zastava counterparts from the late 1980s. Crafted from high-quality cast iron, this cylinder head features a robust, compact design optimized for efficient heat dissipation while maintaining structural integrity under the demanding conditions of daily driving and occasional spirited acceleration. The head is equipped with a **single overhead camshaft (SOHC)** configuration, driving a set of four valves per cylinder two intake and two exhaust via pushrods and rocker arms, ensuring precise valve operation and optimal airflow for improved combustion efficiency. The **1.1-liter displacement** of this engine, paired with the head s compact valve layout, allows for a tight, space-efficient design that complements the Yugo s compact chassis without sacrificing performance.

One of the most critical aspects of this cylinder head is its **threaded bolt pattern**, which utilizes **12mm bolts** to secure the head to the engine block. These bolts, though seemingly simple, play a vital role in maintaining compression and preventing leaks, as they must be torqued to the manufacturer s specifications (typically around **25-30 Nm**) to ensure an even, pressure-sealed gasket interface. The **86-89 GV model** designation indicates this part was specifically produced for the later iterations of the Yugo 306, which featured subtle refinements in cooling and emissions systems, making compatibility with aftermarket upgrades or restorations more straightforward. The head s design also incorporates **individual valve springs and retainers**, which, while prone to wear over time, can be easily serviced or replaced as part of routine maintenance to prevent misfires or valve float at higher RPMs.

For enthusiasts and mechanics working on these classic cars, the **58507 cylinder head** stands out as a key component for restoring or maintaining peak performance. Its compatibility with common 1.1L Yugo/Zastava engines such as those found in the **306, 45, or similar models** makes it a sought-after part for both original-equipment replacements and performance-oriented builds. Whether used in a stock setup or paired with upgraded internals like forged pistons, a high-quality cylinder head ensures that the engine retains its characteristic punchy torque and responsive throttle response. Additionally, its straightforward design allows for relatively easy modifications, such as porting or polishing, which can enhance airflow and breathing capacity without requiring extensive machining. When properly maintained with regular valve adjustments, gasket replacements, and bolt torque checks this cylinder head remains a dependable powerhouse, embodying the rugged yet efficient spirit of the Yugo s engine family.

Buying a used cylinder head for a Yugo/Zastava 306 (58507 engine, 1.1L, 12mm bolts, model years 86-89, GV) can be a cost-effective solution if you're restoring or repairing an older car, but it comes with several considerations.

1. **Cost Savings:** Used cylinder heads are significantly cheaper than new ones, often costing a fraction of the price of an OEM replacement. This can be especially beneficial for budget-conscious restorers or those working on a classic car where original parts are hard to find or expensive.

2. **Availability:** Since these cars are older, parts like cylinder heads are more commonly found in used markets, junkyards, or online listings. This makes it easier to source the part without long waits.

3. **Compatibility:** The part is specific to your engine, so there s no risk of sizing or fitment issues as long as you confirm the correct model and year.

4. **Restoration Value:** For enthusiasts restoring a classic car, using a used part can add to the authenticity and charm of the project, especially if the head is in good condition.

5. **No Warranty Concerns:** Since it s used, you won t have to worry about voiding any factory warranties on the car.

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1. **Condition Uncertainty:** The biggest drawback is that you won t know the full history of the head. It may have been damaged by overheating, warped from improper installation, or worn out from years of use. Issues like cracks, warping, or worn valve seats can lead to poor performance or even catastrophic failure if not addressed.

2. **Hidden Damage:** Even if the head looks fine on the surface, internal issues like burnt valves, pitted combustion chambers, or warped decks may not be visible until it s disassembled and inspected. This can lead to additional repair costs.

3. **Compatibility Risks:** While the part is likely to fit mechanically, other components like gaskets, bolts, or even the engine block may need replacement or inspection to ensure a proper seal and prevent leaks. Using old or mismatched hardware can cause problems down the line.

4. **Quality Variability:** The quality of used parts can vary widely. Some may have been well-maintained, while others might have been neglected or abused. You ll need to thoroughly inspect the head for signs of wear, corrosion, or damage before purchasing.

5. **No Guarantees:** Unlike buying from a dealer or a reputable parts supplier, a private seller or junkyard may not offer any return policy or guarantees. If the part doesn t work or is damaged, you may be out of luck.

6. **Time-Consuming:** Sourcing the right part may take time, especially if you re not familiar with the market or the specific nuances of Yugo/Zastava parts. You may need to spend extra time researching, contacting sellers, or inspecting the part in person.

7. **Potential for Counterfeit or Mismatched Parts:** In some cases, used parts may be mislabeled or swapped with parts from other engines. Always verify the engine code, year, and specifications to avoid compatibility issues.

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- Visible cracks (use a dye penetrant or magnetic particle inspection if possible).

- Warping (check the deck surface with a straightedge and feeler gauges).

- Pitting or corrosion in the combustion chambers or valve seats.

- Signs of overheating (discoloration, warped valves, or burnt deposits).

- Condition of the valve guides and seats (wear or damage can cause leaks or poor performance).

2. **Test the Head:** If possible, ask the seller to run a compression test or check for leaks when the head is installed. Alternatively, you can perform a basic leak-down test or inspect the valves and seats for wear.

3. **Buy from a Trusted Source:** Prefer purchasing from a junkyard with a good reputation, a parts dealer specializing in European or Yugoslavian cars, or a seller with a proven track record. Avoid buying from unverified sources, especially online, unless you can inspect the part in person or have it shipped with a return policy.

4. **Consider a Rebuilt or Remanufactured Head:** If you can t find a used head in good condition, look for a remanufactured or rebuilt head from a specialist. While more expensive than a used part, it comes with warranties and quality assurance. Companies like **Yugo Parts International** or **Eastern European Auto Parts** sometimes offer rebuilt heads for these engines.

- New gaskets (head gasket, valve cover gasket).

- New bolts (12mm bolts should be replaced with new ones, as old bolts can lose tension and cause leaks).

- New valves or valve springs if they show signs of wear.

- A fresh coat of head gasket sealant or RTV if the mating surfaces are rough.

6. **Document the Purchase:** Keep records of the purchase, including photos and any inspection notes, in case you need to return the part or seek warranty coverage.

- Ordering a new cylinder head from a supplier like **Yugo Parts International** or **AutoMotive Parts Europe**, though this will be expensive.

- Building a custom head from a blank (not recommended for beginners due to the complexity and precision required).

- Exploring alternatives like a turbocharged or performance head swap (if you re modifying the engine).

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Buying a used cylinder head for your Yugo/Zastava 306 can be a practical and economical choice if you re prepared to invest time in inspecting the part and addressing potential issues. However, the risks of hidden damage or incompatibility mean you should approach the purchase with caution. If you re unsure about the condition of the head or lack the expertise to inspect it properly, it may be worth paying more for a rebuilt or new head to avoid costly repairs down the road. Always prioritize quality and compatibility to ensure the longevity and reliability of your engine.

Details:

Some may have embellishments or modifications that were made to them something happened during dismantle. GV 86-89 1.1L, 12mm head bolts. Or R is meant for PASSENGER. If you see DF that stands for Drivers FRONT and so on.

No hardware, filters, gaskets, fluids, hoses, wires, brackets, etc. If you seer L that is for Drivers side. Some parts will have rust on them. The pictures you see of the vehicle attached to your listing may not be state in which it currently is.

These embellishments should be stated within the listing. All parts have been tested and are verified correct fitment before they ship.

part #: 306-58507 prices

• $28.92-$79.99

specifications cylinderheapar:

• for years: 1986-1989
• brand: Yugo/zastava
• part type: Cylinder Head Bolt
• genuine oem: Yes
• ipn: 306-58507

seller cylinderheapar:

• # reviews: 6428
• city: Nashua, Iowa
• rating: 98.7%

offer cylinderheapar:

• sold: 0
• quantity: 1
• options: Ship-to-home
• best offers: True
• availability: In Stock
• started: June 4, 2026

shipping cylinderheapar:

• service: Standard
• cost: $0.00
• transit: 4-8 Days
• class: Standard
• type: Fixed

general cylinderheapar:

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

returns cylinderheapar:

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

payments cylinderheapar:

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

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