Cylinder Head Gasket Thermo King 33-6021 / 33-4122 (Yanmar 4.86V)

The Genuine Cylinder Head Gasket Thermo King 33-6021 / 336021 (upper engine block seal) is the core high-pressure sealing component engineered for 4-cylinder Yanmar 4.86V / 486E / 486V (utilizing Yanmar 4TNE88 and 4TNV86 diesel platforms) engines installed across high-capacity Thermo King transport refrigeration units.

The cylinder head gasket withstands extreme thermal cycles and high combustion pressures. Timely replacement is mandatory during top-end engine overhauls or to remedy a blown gasket after thermal overload. Utilizing a genuine multi-layer composite design secures the combustion chambers, prevents dangerous cylinder-to-coolant breaches (preventing antifreeze and motor oil mixing), maintains designed engine compression ratios, and secures reliable, uninterrupted autonomous reefer fleet operations.

This premium replacement part is listed under official Thermo King factory reference 33-6021 (336021) and completely cross-references with the following interchangeable part codes: 33-4122 (334122), 33-5056 (335056), 33-4515 (334515), and 33-2932 (332932).

Technical Information:

• Manufacturer: Yanmar / Thermo King (Original OEM Equipment)
• Part Catalog Numbers: 33-6021, 334122, 33-5056, 33-4515, 33-2932
• Part Type: Diesel Engine Cylinder Head Gasket
• Configuration: Heavy-duty multi-layer steel/composite composite with integrated fire rings and anti-stick coating
• Compatible Engine Series: Yanmar TK 4.86V, 486V, 4.86E, 4TNV86, 4TNE88

Used in Refrigeration Units:
Specifically cataloged for high-output nosemount trailer refrigeration systems driven by 4-cylinder Yanmar engines, including:
SLe-series: SL-100e, SL-200e, SL-400e multi-temperature configurations;
SLX-series: SLX 100, SLX 200, SLX 300, SLX 400, SLX Spectrum;
SLXe-series: SLXe 100, SLXe 200, SLXe 300, SLXe 400, SLXe Spectrum (Whisper / Whisper Pro models);
SLXi-series: Modern units including SLXi 100, SLXi 200, SLXi 300, SLXi 400, and SLXi Spectrum models.

Catalog Number:

Thermo King
33-6021, 336021, 33-4122, 334122, 33-5056, 335056, 33-4515, 334515, 33-2932, 332932

Shipping and Warranty:
Shipping across Russia and Belarus. We arrange quick dispatch via major freight and courier networks to minimize equipment downtime.

Warranty – 1 month. Supplied in original branded packaging with strict factory dimensional controls.

Call or message us to inquire about the price, arrange a meeting, or coordinate delivery. Price is negotiable!

Product Description: Buy genuine cylinder head gasket Thermo King 33-6021 / 33-4122 for Yanmar 486e, 486v, 4TNV86 diesel engines. Heavy-duty head seal (cross references 335056, 334515, 332932) compatible with SLe, SLX, SLXe, and SLXi trailer refrigeration lines.