Model: YC4108
Part Number: D30-9000100
Brands: Yuchai
Engine Model: YC4108
Engine Type: Diesel
Scope of application: light and medium trucks, agricultural machinery, generator sets, marine auxiliary
This is the complete sealing set for a Yuchai YC4108 rebuild. It contains the head gasket, valve cover gasket, intake and exhaust manifold gaskets, oil pan gasket, front and rear crank seals, water pump and thermostat housing seals, injector copper washers and the small O-rings used across the engine.
Buying the full set costs less than assembling parts individually and guarantees that every sealing surface is renewed together. Reusing an old manifold or pan gasket is the most common reason a freshly rebuilt engine begins to leak within the first thousand kilometres.
The kit covers YC4108 engines in trucks, agricultural machinery and generator sets. Confirm the engine plate and, where possible, the old gasket number before ordering, especially if the head has been replaced during an earlier repair.
Kits are packed flat in a rigid carton so the head gasket cannot be creased.
A head gasket failure consumes coolant and pressurises the system. A manifold failure leaves soot tracks and a whistle under load. A rear seal failure leaves oil at the bell housing. Identifying the failure tells you whether a full kit is needed at all.
Agricultural engines work in dust and heat, and both shorten gasket life. Dust raises operating temperature when it blocks the radiator core, and heat cycling works the head gasket harder. Cleaning the radiator and keeping the cooling system full are as important as the gasket quality itself.
Three details decide the fit: engine model, production period and head casting. Send the engine plate photo and the old gasket number and we will confirm before shipping.
Reusing the pan gasket, adding sealant to a head gasket and fitting manifold gaskets dry when the manual calls for a thin film are the most common errors. Each produces a leak that appears only when the engine is hot and working.
Agricultural engines work in dust and heat, and both shorten gasket life. Dust blocks the radiator core and raises operating temperature, while constant heat cycling works the head gasket harder than steady highway running. Cleaning the radiator and keeping the cooling system topped up with the right mixture are as important as the gasket quality itself, and they cost nothing.
The head gasket sees combustion pressure, coolant at temperature and returning oil at the same time, which no other gasket in the engine has to manage. When the engine overheats, the head expands unevenly and the clamping load shifts away from one area of the gasket. The leak that follows starts as a small coolant loss and becomes a compression leak within a few hundred hours.
Store the kit flat, dry and out of sunlight. Composite gaskets absorb moisture slowly, and a kit stored in a damp workshop should be inspected before use. Keep the head gasket in its carton rather than on a bench where it can be bent, because a creased gasket leaks even when installed perfectly.
The kit covers the gaskets and seals that are opened during an overhaul, but it does not include head bolts, bearings or the water pump. Those are ordered separately because they depend on the engine's condition rather than on the kit number. Plan the order so everything arrives together, because a kit waiting for a set of bolts holds the whole rebuild.
Yes, this is a full set.
No. Confirm the engine model before ordering.
No. It is installed dry.
No. Gaskets and copper washers are single-use.
Browse the Yuchai gasket set category, and pair the kit with the YC4108 overhaul kit A9W00-9000200 or the YC4108 crankshaft B8800-1005001B.
Yuchai YC4108 Full Gasket Kit (9000100). Sealing is the difference between a rebuild that finishes in one pass and one that waits a week for a missing washer. This set covers the head, manifolds, injectors and the small seals.
Confirm the kit matches the head casting revision, not only the engine model. Castings changed across production and the gasket followed.
The part number is the reliable identifier here. Where the old number is unreadable, measure the component and compare it with the drawing rather than guessing from the engine model. On this engine, confirm the YC4108 application against the engine plate before ordering.
Install the head gasket dry unless the manual says otherwise. Sealant prevents composite and MLS gaskets from seating correctly.
Ordering note. Inspection reports can be provided for castings and crankshafts on request, covering the measurements taken before packing.
Related reading: Head Gasket Failure Symptoms and How to Choose a Replacement
| We Are 30 Years Diesel Engine Parts Supplier | |
| Brand | EPID |
| Warranty | 12 Months |
| Condition | 100%New |
| More Models | Weichai: YC4108, and other Weichai series. |
| Shipping | By sea / air / express (DHL, FEDEX, TNT, UPS, EMS) |
| Packing | Standard exporting packing or as required |
| Payment Term | L/C, T/T, Western Union, Trade Assurance |
| Delivery Time | 3-7 days (depend on order) |
| Selling Point | 1. On-time Delivery 2. Genuine Quality Assurance 3. Professional Supplier |
Kits are packed flat in a rigid carton so the head gasket cannot be creased.
A head gasket failure consumes coolant and pressurises the system. A manifold failure leaves soot tracks and a whistle under load. A rear seal failure leaves oil at the bell housing. Identifying the failure tells you whether a full kit is needed at all.
Agricultural engines work in dust and heat, and both shorten gasket life. Dust raises operating temperature when it blocks the radiator core, and heat cycling works the head gasket harder. Cleaning the radiator and keeping the cooling system full are as important as the gasket quality itself.
Three details decide the fit: engine model, production period and head casting. Send the engine plate photo and the old gasket number and we will confirm before shipping.
Reusing the pan gasket, adding sealant to a head gasket and fitting manifold gaskets dry when the manual calls for a thin film are the most common errors. Each produces a leak that appears only when the engine is hot and working.
Agricultural engines work in dust and heat, and both shorten gasket life. Dust blocks the radiator core and raises operating temperature, while constant heat cycling works the head gasket harder than steady highway running. Cleaning the radiator and keeping the cooling system topped up with the right mixture are as important as the gasket quality itself, and they cost nothing.
The head gasket sees combustion pressure, coolant at temperature and returning oil at the same time, which no other gasket in the engine has to manage. When the engine overheats, the head expands unevenly and the clamping load shifts away from one area of the gasket. The leak that follows starts as a small coolant loss and becomes a compression leak within a few hundred hours.
Store the kit flat, dry and out of sunlight. Composite gaskets absorb moisture slowly, and a kit stored in a damp workshop should be inspected before use. Keep the head gasket in its carton rather than on a bench where it can be bent, because a creased gasket leaks even when installed perfectly.
The kit covers the gaskets and seals that are opened during an overhaul, but it does not include head bolts, bearings or the water pump. Those are ordered separately because they depend on the engine's condition rather than on the kit number. Plan the order so everything arrives together, because a kit waiting for a set of bolts holds the whole rebuild.
Browse the Yuchai gasket set category, and pair the kit with the YC4108 overhaul kit A9W00-9000200 or the YC4108 crankshaft B8800-1005001B.
Yes, this is a full set.
No. Confirm the engine model before ordering.
No. It is installed dry.
No. Gaskets and copper washers are single-use.
EPID supplies diesel engine parts for Weichai, Baudouin, Yuchai, Caterpillar, Sinotruk, FAW Xichai and Cummins engines. Every order is checked against the original part number before packing, and our team can identify a part from a photo of the engine plate. Ask for a quotation with your model and quantity and we will reply within one working day.
