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Basic Info.

Part no.	4TNV84	Material	steel
Type	Cylinder Head	Part Type	Engine Parts
Compatibility	Yanmar	Transport Package	Wooden box
Trademark	DIRON	Origin	Luoyang City
HS Code	84099991	Production Capacity	5000PCS/Year

Product Details

• Date First Listed：2025/03/23
• Manufacturer：Diron Parts

Product Description

• Part Type：Cylinder Head
• Description: Yanmar Engine

Product Introduction: Yanmar 4TNV84 Cylinder Head

Overview

The Yanmar 4TNV84 Cylinder Head is a high-quality component engineered for the Yanmar 4TNV84, a 1.995-liter (2.0L), four-cylinder, naturally aspirated diesel engine from the TNV (Total New Value) series. Introduced as an evolution of the TNE series, the 4TNV84 is widely utilized in industrial equipment such as compact excavators, tractors, skid steer loaders, and generators, offering improved emissions performance and efficiency. Manufactured to OEM specifications, this cylinder head is available in bare or complete configurations (with valves, springs, and camshaft), making it an essential replacement part for maintaining engine reliability in demanding applications. It reflects Yanmar’s commitment to compact, durable, and environmentally friendly diesel technology.

Key Features

• Material: Constructed from cast iron, ensuring exceptional durability, heat resistance, and structural integrity, ideal for diesel engine longevity.
• Design: Features a single overhead camshaft (SOHC) configuration with 8 valves (2 per cylinder), precision-machined intake and exhaust ports for enhanced airflow, and compatibility with direct injection systems for improved combustion efficiency.
• Compatibility: Designed for the Yanmar 4TNV84 and its variants, including:
  • 4TNV84, 4TNV84T (turbocharged), 4TNV84-DM, 4TNV84-GGE.
  • Applications: John Deere tractors (e.g., 3036E, 3038E), Komatsu excavators (e.g., PC45MR-3), Takeuchi skid steers (e.g., TS50R), and Yanmar generators (e.g., YDG5500).
• Part Numbers: Common OEM references include 129407-11700 (shared with 4TNE84 in some cases, though specific TNV variants may differ), 129900-11700, and aftermarket equivalents.
• Configuration Options: Available as a bare cylinder head or fully assembled with pre-installed valves, springs, and camshaft, depending on supplier specifications.

Technical Specifications

• Engine Fitment: Yanmar 4TNV84 (1,995 cc, 2.0L, 4-cylinder diesel)
• Material: Cast iron
• Valve Configuration: 8-valve SOHC (intake and exhaust valve sizes typically 35-38 mm and 31-34 mm, respectively, though exact sizes may vary by supplier).
• Power Output: Supports 30-50 HP (22-37 kW), depending on application and turbocharging.
• Weight: Approximately 35-45 lbs (16-20 kg), varying by configuration (bare vs. complete).
• Fuel System: Compatible with direct injection (TNV series upgrade over TNE’s indirect injection), enhancing fuel efficiency and reducing emissions.

Performance Benefits

The Yanmar 4TNV84 Cylinder Head enhances engine performance by:

• Maintaining high compression ratios (typically 18:1 to 19:1) for efficient diesel combustion and low fuel consumption.
• Optimizing airflow and fuel delivery through direct injection compatibility, improving power output and meeting stringent emissions standards (e.g., Tier 2/Tier 3).
• Providing robust thermal management, ensuring reliability during continuous operation in industrial settings.

Applications

This cylinder head is critical for equipment powered by the Yanmar 4TNV84 engine, including:

• Agricultural Equipment: John Deere compact tractors (e.g., 3036E, 3038E, 3045R), Hitachi ZX40U excavators.
• Construction Machinery: Komatsu excavators (e.g., PC45MR-3, PC50MR-2), Takeuchi skid steers (e.g., TS50R, TS60R), Kobelco SK45SRX-6.
• Generators: Yanmar YDG5500, Multiquip DCA25SSIU, and other portable power units.
• Other Equipment: Gehl loaders (e.g., 4240E), Mustang skid steers (e.g., 2041, 2044).

Installation Considerations

• Compatibility Check: Verify engine variant (e.g., 4TNV84, 4TNV84T) and part number (e.g., 129900-11700) for proper fitment, as TNV and TNE series parts may differ slightly.
• Required Components: Installation requires a new head gasket (e.g., 129900-01330), head bolts, and potentially a timing kit for full service.
• Torque Specifications: Adhere to Yanmar’s multi-stage torque sequence (e.g., initial torque of 40 Nm, followed by +90° increments) for secure installation.
• Professional Installation: Recommended to ensure precise alignment, timing, and sealing, avoiding issues like leaks or valve train damage.

Why Choose the Yanmar 4TNV84 Cylinder Head?

Versatility: Fits a broad range of equipment, making it a reliable choice for repairs and rebuilds.

Durability: Cast iron construction withstands the rigors of industrial use, offering long service life.

Efficiency: Supports the TNV series’ direct injection for improved fuel economy and reduced emissions.

Note: While this description provides general information about cylinder heads, specific details such as size, weight and exact material may vary by manufacturer and specific application. To obtain the most accurate and up-to-date information, it is recommended to consult a qualified parts supplier such as DIRON PARTS.

FAQ

ABOUT DIRON

• Factory OF DIRON

Diron Parts Group Have Its Own Factory Ensure That We Offer Better Price For Customers. Besides, Diron Corporate With Some Reliable Principal Manufacturers, So Diron Also Supply Customer Other Quality Spare Parts.

• Team OF DIRON

With 18 years of manufacturing and exporting experience, Diron has a team of knowledgeable engineers, inspectors and technical workers, sales staff, after-sales personnel.

• Products OF DIRON

As a distributor, we supply parts covers for :Complete engines, Long block, Short block, Engine spare parts, Electricla products, Hydraulic products, Transmission products, Undercarridge products.Among them, Cylinder head, Cylinder block, Spacer-plate, Bushing & Pin are our best-selling products.