Overhaul Rebuild Kit for Yanmar 3TN78 for Komatsu 3D78-1D Engine
Overhaul Rebuild Kit for Yanmar 3TN78 for Komatsu 3D78-1D Engine - Standard / Standard is backordered and will ship as soon as it is back in stock.
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Powering 10,000+ Commercial Fleets
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One Year Warranty
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Easy 60-day Return
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Expert support & Fitment Guarantee
Description
Description
Overhaul Rebuild Kit for Yanmar 3TN78 for Komatsu 3D78-1D Engine
Application:
Fit For Yanmar Engine: 3TN78
Fit For Komatsu Engine: 3D78-1D
Content:
1 Set of Overhaul Gasket Kit
1 Set Cylinder Liners (Semi-finished)
1 Set Pistons, standard
1 Set Piston Pins
1 Set Snap Rings
1 Set Rod Bushings
1 Set Rings Pistons, standard
1 Set of Main Bearings
1 Set of Rod Bearings
1 Set of Thrust Washer
1 Set Intake and Exhaust Valves
1 Set Valve Guides
1 Set Intake and Exhaust Valves Seats
*The cylinder liners in this kit are semi-finished. They require additional machining.
1 Year Warranty
1 Year Warranty
Fab Heavy Parts is excited to offer a 12-month warranty on all new replacement/aftermarket parts starting from your original purchase date.
Enjoy peace of mind with Fab Heavy Parts!
For more warranty details, please check out our warranty policy.
Fast Delivery
Fast Delivery
Estimated delivery time 4-7 workdays
60 Days Easy Return
60 Days Easy Return
Simply return it to the nearest warehouse if you don't like it.
For more details about returns, please check out our return policy.
Premium Engine Overhaul Kits
Complete rebuild solutions engineered for heavy machinery reliability. Every component precision-matched for OEM-grade performance and extended service life.
🔧 Complete Rebuild Solution
Full gasket sets, bearings, piston rings, seals, and critical wear components in one comprehensive kit. Everything you need for a professional engine rebuild.
✓ OEM Compatibility
Precision-engineered to meet or exceed original equipment specifications. Direct-fit components ensure proper clearances and optimal performance.
⚙️ Engineering-Grade Quality
Premium materials and strict quality control. Each component tested for dimensional accuracy, material integrity, and performance reliability.
📦 Time & Cost Savings
Single-source procurement eliminates multiple orders and reduces downtime. Competitive pricing without compromising on quality or completeness.
What's Included in Our Engine Overhaul Kits
Gasket & Seal Components:
- Complete upper and lower gasket sets
- Cylinder head gaskets (multi-layer steel)
- Oil pan and valve cover gaskets
- Front and rear crankshaft seals
- Valve stem seals and O-rings
Wear Components:
- Piston ring sets (compression & oil control)
- Main and rod bearing sets
- Thrust washers and bushings
- Valve guides and seats (select models)
Multi-Brand Compatibility
Our engine overhaul kits support major heavy equipment manufacturers across construction, agricultural, and industrial applications:
Ideal Applications
🏗️ Construction Equipment
Excavators, loaders, dozers, and backhoes requiring complete engine restoration
🚜 Agricultural Machinery
Tractors, harvesters, and farm equipment with high-hour engines
🏭 Industrial Equipment
Generators, pumps, compressors, and stationary power units
🚛 Commercial Vehicles
Heavy-duty trucks and fleet vehicles needing major overhauls
Why Choose Fab Heavy Parts Overhaul Kits
✓ Precision Engineering
Every component manufactured to tight tolerances with advanced metallurgy and material science for maximum durability and performance.
✓ Complete Documentation
Detailed parts lists, torque specifications, and compatibility data included. Technical support available for installation guidance.
✓ Verified Compatibility
Cross-referenced against OEM part numbers and engine serial ranges to ensure correct fitment and eliminate guesswork.
✓ Professional-Grade Results
Trusted by fleet managers, repair shops, and equipment owners who demand reliability and extended service intervals.
Installation Best Practices
⚠️ Professional Installation Recommended: Engine overhaul requires specialized tools, technical knowledge, and proper torque specifications. We recommend installation by certified technicians with experience in heavy equipment engine rebuilds.
- Verify engine model and serial number before ordering
- Inspect cylinder bores and crankshaft for wear limits
- Clean all mating surfaces thoroughly before assembly
- Follow manufacturer torque sequences and specifications
- Use proper assembly lubricants and sealants
- Perform break-in procedure per OEM guidelines
Ready to Restore Your Engine?
Browse our complete selection of engine overhaul kits by manufacturer and model. Each kit includes detailed compatibility information and component specifications.
Need help finding the right kit? Contact our technical team with your engine model and serial number for personalized assistance.
Questions fréquentes
Combien coûte la livraison vers la France ?
Les frais de livraison sont calculés dans votre panier. Saisissez votre adresse de livraison et votre code postal pour connaître le tarif disponible avant de passer commande.
Quand vais-je recevoir ma commande ?
Les commandes sont généralement traitées sous 1 à 2 jours ouvrés. Le délai de livraison estimé vers la France est de 4 à 7 jours ouvrés après l’expédition. Les retards liés au transporteur ou aux formalités douanières peuvent prolonger ce délai.
Les prix sont-ils affichés en euros ?
Oui. Pour les commandes expédiées en France, tous les prix des produits et les montants affichés lors du paiement sont indiqués en euros, et vous pouvez payer en EUR.
La TVA et les taxes d’importation sont-elles incluses ?
Non. Les prix des produits n’incluent pas la TVA française, les droits d’importation, les taxes ni les frais de dédouanement. L’acheteur est responsable de tous les frais appliqués à destination. Le transporteur ou les douanes françaises peuvent vous contacter pour demander le paiement avant la mainlevée de l’envoi. Le montant final dépend notamment de la valeur déclarée, du pays de fabrication, de la description du produit et de son code SH.
Puis-je retourner ma commande ?
Les pièces admissibles, non utilisées, peuvent être retournées dans les 60 jours suivant la livraison. Elles ne doivent pas avoir été installées et doivent être propres, intactes et dans leur emballage d’origine. Pour effectuer un retour, commencez par utiliser notre portail de retour avant de nous renvoyer quoi que ce soit.
Quels moyens de paiement acceptez-vous ?
Vous pouvez payer par Visa, Mastercard, PayPal, Shop Pay, Apple Pay et Google Pay. Les options disponibles s’affichent de manière sécurisée lors du paiement.
