Top End Gasket Kit — 0.81 mm, 4-Stroke

COMETIC Top End Gasket Kit — 0.81 mm, 4-Stroke – 36-56 Big Twin, 52-56 Model K, 57-69 Sportster

COMETIC
0934-1375
C9515-032AFM
Complete top-end gasket kit with MLS and EST options for high-output 4-stroke engines. Includes head and base gaskets plus essential O-rings. Made in the USA.
Hurry! only 10 items left in stock.
€29.03
€39.29
Save €10.26
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Quantity

  Delivery policy

In stock items will be shipped within 1-3 days.

  Return policy

You can return the products within 14 days for a full refund, check our returns policy.

Top end gasket kit includes the correct base and head gaskets, cylinder O-rings and additional top-end seals required for removal and reinstallation of the top end. 🔧

Multi-layer steel (MLS) head gaskets promote an even torque load across the sealing surface, reducing bore distortion and improving piston ring seal for more power. ⚙️

Designed for high-output 4-stroke engines, these head gaskets feature embossed outer layers coated with a Viton rubber material to meet the demands of modern, high-cylinder-pressure machines.

EST (Extreme Sealing Technology) variants include embossed stainless steel head, base and rocker gaskets covered with a proprietary rubber material for enhanced sealing and heat dissipation.

The gasket construction draws heat away from the combustion ring and dissipates it evenly across the gasket surface to reduce hot spots and the risk of gasket failure.

Made in the USA.

: 0934-1375
: 10 Items
In Stock

Data sheet

Type
Transmission End Cover
Units
10 Pack
Brand
COMETIC
Engine Type
4-Stroke
Thickness
0,81 mm (0,032")
Material
AFM (Aluminum Foam Material)

Shipping Policy

Shipping Areas:

We ship to:

  • Spain (Peninsula and Balearic Islands)
  • European Union countries

We do not ship to the Canary Islands, Ceuta, or Melilla.

Shipping Times:

  • Spain (Peninsula): 2–4 business days
  • Balearic Islands: 3–5 business days
  • EU countries: 3–7 business days depending on destination

Shipping Costs:

Shipping costs are calculated automatically at checkout based on destination and weight.

Free shipping may be offered for qualifying orders, as specified on our website.

Order Processing:

Orders are processed within 1–2 business days after payment confirmation. Orders placed on weekends or public holidays are processed the next business day.

Delivery Issues:

If your order is delayed or arrives damaged, you must notify us within 14 calendar days. We will investigate the issue and offer a resolution in accordance with applicable consumer protection laws.

Return & Withdrawal Policy

Right of Withdrawal:

In accordance with Royal Legislative Decree 1/2007 (Ley de Defensa de los Consumidores y Usuarios), you have the right to withdraw from your purchase within 14 calendar days from the date of receipt, without giving any reason.

To exercise this right, contact us via email or through our website, providing your order number and contact details.

Return Conditions:

  • Products must be unused, in original condition and packaging.
  • Return shipping costs are the responsibility of the customer, unless the product is defective or sent in error.
  • Refunds will be issued within 14 days of receiving the returned goods.

Items Excluded from Return:

  • Custom or personalized products
  • Sealed items that were unsealed after delivery and are unsuitable for return due to hygiene (e.g. cosmetics, personal care)
  • Digital content delivered electronically once download or streaming has begun

If you want to return an item, please contact us first to give you detailed instructions.

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Big Twin 1936
Harley Davidson Big Twin 1937
Harley Davidson Big Twin 1938
Harley Davidson Big Twin 1946
Harley Davidson Big Twin 1947
Harley Davidson Big Twin 1948
Harley Davidson Hydra Glide Big Twin 1949
Harley Davidson Hydra Glide Big Twin 1950
Harley Davidson Hydra Glide Big Twin 1951
Harley Davidson Hydra Glide Big Twin 1952
Harley Davidson Big Twin 1936
Harley Davidson Big Twin 1937
Harley Davidson Big Twin 1938
Harley Davidson Big Twin 1939
Harley Davidson Big Twin 1940
Harley Davidson Big Twin 1941
Harley Davidson Big Twin 1942
Harley Davidson Big Twin 1943
Harley Davidson Big Twin 1944
Harley Davidson Big Twin 1945
Harley Davidson Big Twin 1946
Harley Davidson Big Twin 1947
Harley Davidson Big Twin 1948
Harley Davidson Hydra Glide Big Twin 1949
Harley Davidson Hydra Glide Big Twin 1950
Harley Davidson Hydra Glide Big Twin 1951
Harley Davidson Hydra Glide Big Twin 1952
Harley Davidson Hydra Glide Big Twin 1952
Harley Davidson Big Twin 1946
Harley Davidson Big Twin 1947
Harley Davidson Big Twin 1948
Harley Davidson Hydra Glide Big Twin 1949
Harley Davidson Hydra Glide Big Twin 1950
Harley Davidson Hydra Glide Big Twin 1951
Harley Davidson Hydra Glide Big Twin 1952
Harley Davidson Big Twin 1941
Harley Davidson Big Twin 1942
Harley Davidson Big Twin 1943
Harley Davidson Big Twin 1944
Harley Davidson Big Twin 1945
Harley Davidson Big Twin 1946
Harley Davidson Big Twin 1947
Harley Davidson Hydra Glide Big Twin 1953
Harley Davidson Hydra Glide Big Twin 1954
Harley Davidson Hydra Glide Big Twin 1956
Harley Davidson Hydra Glide Big Twin 1953
Harley Davidson Hydra Glide Big Twin 1952
Harley Davidson Hydra Glide Big Twin 1953
Harley Davidson Hydra Glide Big Twin 1955
Harley Davidson Model K Model K 1952
Harley Davidson Model K Model K 1953
Harley Davidson Model K Model K 1954
Harley Davidson Model K Model K 1955
Harley Davidson Model K Model K 1956
Harley Davidson Model K Model K 1955
Harley Davidson Model K Model K 1956
Harley Davidson Big Twin 1936
Harley Davidson Big Twin 1937
Harley Davidson Big Twin 1938
Harley Davidson Big Twin 1939
Harley Davidson Big Twin 1940
Harley Davidson Big Twin 1941
Harley Davidson Big Twin 1942
Harley Davidson Big Twin 1943
Harley Davidson Big Twin 1944
Harley Davidson Big Twin 1945
Harley Davidson Big Twin 1946
Harley Davidson Big Twin 1947
Harley Davidson Big Twin 1948
Harley Davidson Big Twin 1938
Harley Davidson Big Twin 1939
Harley Davidson Big Twin 1940
Harley Davidson Big Twin 1941
Harley Davidson Big Twin 1936
Harley Davidson Sportster Sportster 1957
Harley Davidson Sportster Sportster 1958
Harley Davidson Sportster Sportster 1959
Harley Davidson Sportster Sportster 1958
Harley Davidson Sportster Sportster 1958
Harley Davidson Sportster Sportster 1959
Harley Davidson Sportster Sportster 1960
Harley Davidson Sportster Sportster 1961
Harley Davidson Sportster Sportster 1962
Harley Davidson Sportster Sportster 1963
Harley Davidson Sportster Sportster 1964
Harley Davidson Sportster Sportster 1965
Harley Davidson Sportster Sportster 1966
Harley Davidson Sportster Sportster 1967
Harley Davidson Sportster Sportster 1968
Harley Davidson Sportster Sportster 1969
Harley Davidson Sportster Sportster 1958
Harley Davidson Sportster Sportster 1959
Harley Davidson Sportster Sportster 1960
Harley Davidson Sportster Sportster 1961
Harley Davidson Sportster Sportster 1962
Harley Davidson Sportster Sportster 1963
Harley Davidson Sportster Sportster 1964
Harley Davidson Sportster Sportster 1965
Harley Davidson Sportster Sportster 1966
Harley Davidson Sportster Sportster 1968