Best Cylinder Heads 2025

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Last Updated - 26.07.2025

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01

KIIPO

Grehge te Cylinder Head and Engine Rebuilding Handbook
9.9

Exceptional

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274,56 €
02

Motor Racing Publications Ltd

Theory and Practice of Cylinder Head Modification (The MRP speedsport series)
9.7

Exceptional

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157,36 €
Value for Money

03

Cartech

David Vizard's How to Port and Flow Test Cylinder Heads (S-A Design)

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20% Off
9.5

Excellent

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S-A Books David Vizard's How to Port and Flow Test Cylinder Heads P/N 215

25,61 € 32,21 €(20% Off off)
04

Heel Verlag GmbH

Praxishandbuch Zylinderköpfe: Technik, Tuning, Modifikationen
9.4

Excellent

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29,95 €
05

Bars

Bars Bar's Cylinder Head Gasket Sealant and Repair Additive 600ml

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9.3

Excellent

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WARNINGS - Make sure you use the entire bottle. When the cooling system is full, it may be necessary to drain some of the existing coolant before use. Check the liquid level before and after use. Always be careful when working near an engine as engine parts can cause severe burns. Not suitable for cooling systems with a volume of 3 litres or less.
Shake the product well before addition. Place the entire contents directly into the cooler according to the dosage instructions. If you do not have direct access to the radiator, you can also put the product in the radiator hose or in the overpressure tank. Let the engine run until it reaches the normal operating temperature, then turn off the vehicle and let it cool. Restart the vehicle and let it run at high idle speed for 15 minutes. Turn off the vehicle and let it cool before filling up the radiator. Sufficient for up to 10 litres of coolant.
Description | Bar's Cylinder Head Gasket Repair penetrates leaky, burst or damaged cylinder head gaskets and cools down to ensure a seal. This product contains a combination of antifreeze sodium silicate (liquid glass) and gasket particles of various sizes that penetrate into gaps and cracks in the block and in the cooling system near the combustion chamber. This product is recommended for vehicles that do not overheat or where the coolant needs to be refilled after 15-30 minutes of idle time. Small leaks on the cylinder head gasket and engine block can be completely prevented by using this product.
Benefits : Sodium silicate liquid glass formula. Contains Bar Rhizex reinforcing fibres. No draining of cooling system required. Will not damage the cooling system when used correctly. Special one-step formula / antifreeze compatible. Continuous protection.
As the engine mileage increases, their components wear out over time and with repeated use. It is not uncommon for seals to warp and crack due to extreme temperatures and pressures. Sometimes the physical damage extends to the combustion chamber, cylinder heads and cylinder walls, causing serious mechanical problems such as compression loss, excessive exhaust smoke, loss of power and contamination of the lubrication and cooling system fluids.

25,80 €
06

HAOCHEN

1110 Pieces M3 Screws Nuts Assortment Set, Hexagonal Button Cylinder Screws with Hexagon Socket Thread Screws with Nuts, Hex Bolts, Carbon Steel Machine Screws

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9.1

Excellent

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Wide Applications Widely used for fixing sheet metal to wood, fiberglass or metal. Suitable for household and office equipment, communication equipment, ship assembly and others.
Premium Material The hex bolts and nuts and bolts are made of excellent carbon steel, which has good resistance to corrosion, rust and oxidation, sturdy and can ensure long-term use.
Package contents: you will receive 300 m3 x nuts, 300 washers, 55 m3 x 4 mm screws, 55 m3 x 5 mm screws, 55 m3 x 6 mm screws, 55 m3 x 8 mm screws, 55 m3 x 10 mm screws, 55 m3 x 12 mm bolts, 30 m 3 x 14 3mm Bolts 30m3 x 16mm Bolts 30m3 x 18mm Bolts 30m3 x 20mm Bolts 30m3 x 25mm Bolts 30m3 x 30mm Bolts Total 1110pcs
Easy to Use Our screws and bolts are sharp, clean and accurate. And will not easily deform and slip during use. Deep and clear hex socket and head can make your work easier.
EASY STORAGE All screws and nuts are housed in a sturdy plastic storage box. This hex bolt set is housed in a clear storage case for quick access and protection.

13,88 €
07

RELD

Reld Cylinder Head Gasket Tester, CO2 Leak and Coolant Check, Universal, for All Cars and Motorcycles, Cylinder Head Gasket CO2 Leak Tester, Rapid Engine Leak Detector, for 50 Tests

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15% Off
9.0

Excellent

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- Thanks to the universal adapter with a large measuring range (25 - 55 mm), you can check cars, trucks, tractors, excavators, motorcycles and forklifts among others.
- Quick, cheap and above all without having to visit a mechanic, you can check whether the cylinder head or the seal under the head in your car is fully functional.
- Original cylinder head seal tester from the renowned brand "Reld".
- Made in the European Union. With 99.9% efficiency!
- If you suspect a seal defect under the cylinder head or in the cylinder head itself, you can check the error yourself and save time and money.

18,69 € 21,99 €(15% Off off)
08

Veloce Publishing

How to Build, Modify & Power Tune Cylinder Heads: Updated & Revised Edition (Speedpro Series)

17% Off
8.8

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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25,89 € 31,36 €(17% Off off)
09

Cartech

High-Performance Chevy Small-Block Cylinder Heads

28% Off
8.6

Very Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.
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24,85 € 34,80 €(28% Off off)
10

RUGLAMZHIP

500 x M3 screws set, hexagon socket screws, nuts set, hexagon socket screw assortment set, hexagon socket threaded screws, screw assortment, machine screws with nuts

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12% Off
8.5

Good

Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

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Main highlights

Wide range of applications: suitable for furniture repair, mechanical instruments, industry, plumbing, DIY projects, communication equipment and other fields. It is suitable for professionals, hobbyists, landlords, craftsmen and more and is an indispensable tool for private life.
The package includes: total 500 pieces, sizes and quantities include: 50 pieces M3 x 6 mm, 40 pieces M3 x 8 mm, 50 pieces M3 x 10 mm, 40 pieces M3 x 12 mm, 50 pieces M3 x 16 mm, 50 pieces M3 x 20 mm, 220 pieces M3 nuts, 1 x L shape 1 Wrench, meet different requirements scenario and domain usage requirements.
Exquisite material: M3 screw set is made of high-quality carbon steel with exquisite workmanship, high strength, hardness, strong load capacity, corrosion resistance, rust-proof, not easy to break or deform, durable and can maintain good performance in any environment.
Easy storage: all screw assortment are stored in a transparent and sturdy storage box with compartments. Hex screw set are stored separately, well organised, easy to transport and find. During transport, there is no confusion and the use is convenient.
Cylinder head hexagon design: screw nuts set has clear thread, even pitch, clean and precise and even force. The Allen head is easy to install with a wrench and is not easy to deform and move. Nuts make assembly more precise, reduce stress and protect parts and screws.

5,99 € 6,88 €(12% Off off)