Copper Cylinder Head Gasket fits John Deere A Tractor | Replaces A404R

Copper Clad Cylinder Head Gasket

Fits John Deere A series Tractors up to SN: 487999, (AO, AR up to SN: 259999)

• Premium Copper-Clad Construction – Delivers superior heat conductivity to pull heat away from the combustion chamber, helping prevent hot spots, warping, and premature gasket failure in hard-working John Deere engines.
• Exceptional Strength & Durability – Copper’s high tensile strength and elasticity stand up to high cylinder pressures and thermal cycling far better than standard composite gaskets.
• Malleable for a Tight, Reliable Seal – Soft copper conforms to minor surface imperfections on the block and head for excellent combustion sealing and reduced blow-by.
• Corrosion-Resistant Design – Resists degradation from coolant, oil, and combustion byproducts better than many traditional gasket materials, extending service life in agricultural environments.
• Ideal for Restorations & Heavy-Duty Use – Popular choice for classic John Deere tractors (including many older 2-cylinder models) where long-term reliability and proper sealing matter.
• Better Heat Distribution – Helps maintain more even block and head temperatures for consistent performance and reduced risk of overheating-related issues.
• High-Quality Aftermarket/Reproduction Part – Built for a precise fit and dependable sealing when properly installed with clean, flat surfaces (recommend checking your specific model/serial for exact compatibility).

Replacement Numbers A404R