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Thermo King Yanmar Engine Crankshaft Front Oil Seal, 33-4088 / 334088


Sale price $10.99 Regular price $14.99
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Description

This Genuine OEM Thermo King Crankshaft Front Oil Seal (Part Number: 33-4088 / 334088) is a high-performance sealing component specifically engineered for Yanmar diesel engines powering commercial transport refrigeration units (TRUs). Designed for high-vibration over-the-road environments, this premium elastomeric seal creates a secure, leak-proof barrier at the front engine casing. It actively contains critical lubricating engine oil within the crankcase while blocking external contaminants like road grime, salt, and moisture from bypassing the seal lip. Manufactured from premium-grade synthetic composites, it features superior temperature and chemical resistance to endure continuous high-RPM friction and severe thermal cycles without dry-rotting or hardening. Replacing a degraded front seal prevents messy oil leaks, stabilizes internal oil pressure, and shields your expensive diesel engine from catastrophic lubrication loss and sudden cargo downtime. [1, 2, 3]
⭐ Key Features & Benefits
  • Genuine OEM Fitment: Authentic original equipment tolerances guarantee a seamless drop-in installation and matching factory performance. [1, 2]
  • High-Grade Elastomer Lip: Formulated for superior thermal and chemical resistance to prevent degradation from synthetic engine lubricants. [1]
  • Advanced Dirt Exclusion: Auxiliary dust-shielding features protect the primary sealing face from abrasive highway dust and road salt debris.
  • Maintains Crankcase Pressure: Prevents expensive oil seepage around the front pulley nose, keeping engine compartments clean and efficient. [1]
  • Extends Diesel Engine Life: Eliminates oil starvation risks to safeguard internal crankshaft bearings and components from wear. [1, 2]
🔧 Uses / Applications
  • Front Main Engine Rebuilds: Swapped during comprehensive engine overhauls or front pulley and timing gear maintenance cycles.
  • Yanmar TK486 Series Service: Engineered as the direct replacement front seal for Yanmar 4.82, 4.86, 486E, and 486V transport diesel engines.
  • Reefer Fleet Preventive Maintenance: Standard preventive service part utilized across Thermo King SB, SLX, and Spectrum trailer fleets.
  • High-Margin Liquidator Surplus: Highly sought-after maintenance component for heavy-duty truck centers, fleet managers, and parts liquidators. [1, 2, 3, 4]
📊 Technical Specifications
Specification Detail
Part Type Crankshaft Front Oil Seal Assembly
Position Front Main Engine / Timing Cover Housing
Part Number 33-4088 / 334088 (Interchangeable with 33-1952 / 331952)
Material Premium High-Temperature Chemical-Resistant Elastomer / Steel Casing
Fitment Thermo King SB / SLX / Spectrum Units with Yanmar 4.82 & 4.86 Engines
Condition Brand New
Installation Direct-Fit Press-In Mechanical Replacement
🔄 Cross‑Reference / Interchange Table
Manufacturer Equivalent Part Number
Thermo King (OEM) 33-4088 / 334088 / 33-1952 / 331952
Peak Thermo King 334088
Myriad Parts MRD-33-4088
Firmusparts / Aftermarket 10-33-4088
Additional Notes Often recommended to be purchased alongside the timing cover matching gasket (part number 33-2933) for a clean seal rebuild.

Disclosure Policy

This product was acquired by Freeman Liquidators from a sale of merchandise subject to a commercial insurance loss. Freeman Liquidators is a secondary seller of products, is not affiliated with or sponsored by the manufacturer of the products and is not a manufacturer authorized seller of the products. Sale of this product by Freeman Liquidators is not subject to the policies of the manufacturer. Any warranty offered by the manufacturer is not available to you as the purchaser.

All products are NEVER USED but external packaging will have damage. Some items may be placed into other packaging to ensure safe shipping. All items are opened for inspection prior to shipment to ensure the best quality of products. Freeman Liquidators guarantees your satisfaction. If you are not completely satisfied with a purchased product, within 30 days from the date of purchase, return the product in its packaging and Freeman Liquidators will fully refund your money.

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Thermo King Yanmar Engine Crankshaft Front Oil Seal, 33-4088 / 334088

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