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Mr. Perry Wu International Sales Director
Genuine YC4D120-21(D1204) Engine Parts - Starter, Alternator, Air Compressor & Sensors
|
Engine Model |
YC4D120-21(D1204) |
|
Rated Power |
120 HP (90 kW) @ 2800 rpm |
|
Rated Torque |
420 N·m @ 1600-1900 rpm |
|
Emission Standard |
Euro II / China II |
|
Application Field |
Light-duty/medium-duty trucks, low-tonnage medium trucks, small construction machinery |
|
Core Advantages |
Low fuel consumption (≤205g/kW·h), high reliability (alloy cast cylinder block), easy maintenance (universal parts), turbocharged intercooled power system |
Product Description
Power, Precision, Partnership: The Genuine Yuchai Ecosystem
Choose the authentic power legacy of Yuchai. Our 100% genuine OEM parts for the YC4D120-21(D1204) engine are designed to restore its original horsepower, torque, and efficiency, delivering the true Yuchai DNA.
Uncompromised Quality, Forged on the Original Line
Every part is produced to identical specifications under the stringent Yuchai Quality Control System (QCS), guaranteeing perfect fitment, durability, and seamless integration to preserve engine value.
Your One-Stop Solution for Assured Performance
We provide a comprehensive, one-stop supply—from components to complete kits, backed by technical support. This
Detail Parts List
1、 D0305-3509000/15 Pneumatic Air Compressor Assembly
|
No. |
Part No. |
Part Name |
Qty. |
Remark |
|
1 |
D12F5-3509100B |
Air compressor |
1 |
|
|
2 |
231-3509024A |
Air compressor water inlet pipe |
1 |
|
|
3 |
Q/YC149-14 |
Washer 14 |
8 |
|
|
4 |
6QA6-1307017 |
Joint bolt |
4 |
|
|
5 |
D0305-3509041 |
Sleeve barrel |
1 |
|
|
6 |
D0305-3509042 |
Pipe clip |
2 |
|
|
7 |
D0305-3509033 |
Rubber sleeve |
1 |
|
|
8 |
373-3509002 |
Air compressor water return pipe |
1 |
|
|
9 |
Q150B1255 |
Bolt M12×55 |
1 |
|
|
10 |
Q40112 |
Washer 10 |
1 |
|
|
11 |
Q40312 |
Washer 10 |
1 |
|
|
12 |
D30-3509001A |
Air compressor gasket |
1 |
|
|
13 |
D30-3509011 |
Air compressor gear |
1 |
|
|
14 |
Q40110 |
Washer 8 |
4 |
|
|
15 |
Q10310 |
Washer 8 |
4 |
|
|
16 |
Q150B1030 |
Bolt M10×30 |
1 |
|
|
17 |
Q150B1040 |
Bolt M10×40 |
3 |
|
|
18 |
6105Q-1007073 |
Joint bolt |
2 |
|
|
19 |
Q/YC149-8 |
Compound seal washer |
4 |
|
|
20 |
D30-3509004A |
Air compressor oil inlet pipe |
1 |
|
|
21 |
E12N1-3509008 |
Air outlet joint |
1 |
|
|
22 |
Q/YC901-3C22 |
Washer 22 |
1 |
|
|
23 |
D12F5-3509010 |
Air compressor intake joint |
1 |
|
|
24 |
Q151B1085TF2 |
Bolt M10×1 ×85 |
1 |
|
|
25 |
G3220-3701061 |
Block |
1 |
2、D0701-3701000/05 Alternator Assembly
|
No. |
Part No. |
Name |
Qty. |
Remark |
|
1 |
Q150B10130 |
Bolt M10× 130 |
1 |
|
|
2 |
D0701-3701100 |
Alternator |
1 |
|
|
3 |
Q40110 |
Washer 10 |
2 |
|
|
4 |
Q40310 |
Washer 10 |
1 |
|
|
5 |
Q340B10 |
Nut M10 |
1 |
|
|
6 |
6105Q-3509013 |
Washer |
1 |
|
|
7 |
Q403108 |
Washer 8 |
1 |
|
|
8 |
Q150B0865TF2 |
Bolt M08×65 |
1 |
|
|
9 |
D0701-3701036 |
Padding |
1 |
|
|
9 |
D0701-3701052 |
regulation plate |
1 |
|
|
10 |
Q151B1085TF2 |
Bolt M10×85 |
1 |
3、D1204-3800000/01 Intruments and Sensors Assembly
|
No. |
Part No. |
Name |
Qty. |
Remark |
|
1 |
665-3800020 |
Water temperature sensor plug |
1 |
|
|
2 |
648-3800010 |
Annunciator for over low oil pressure |
1 |
Easy Wear Part |
|
3 |
530-3800021A |
Contact piece |
2 |
|
|
4 |
L3800-1600411 |
Plug |
1 |
4、D1204-3708000/01 Starter Assembly
|
No. |
Part No. |
Name |
Qty. |
Remark |
|
1 |
Q40310 |
Washer 10 |
3 |
|
|
2 |
Q150B1030 |
Bolt M10×30 |
3 |
|
|
3 |
D1301-37080100 |
Starter |
1 |
|
|
|
|
Magnetic switch subassembly |
1 |
|
|
|
|
Isolator |
1 |
|
|
|
|
Isolator |
1 |
|
|
|
|
Magnetic switch subassembly |
1 |
|
|
4 |
D1205-3724200 |
Wire coupling |
1 |
5、D12D1-3904000/03 Nameplate assembly
|
No. |
Part No. |
Name |
Qty. |
Remark |
|
1 |
D1200-3904001 |
Nameplate |
1 |
|
|
2 |
YC5-0306 |
Rivet 3×6 |
4 |
Product Advantages
●100% Yuchai OEM Genuine Parts：Produced on Yuchai’s original production line, 1:1 matching the engine.
●Perfect Fitment：Precision-machined to meet YC4D120-21(D1204) technical specifications, no modification needed.
●Durable&Reliable：High-quality materials, passed 300,000+ working hours test.
●Global Warranty：12-month warranty, free replacement for quality issues.
●One-Stop Supply：Covers all parts of the engine, simplifying procurement.
Payment & Shipping Terms
● MOQ: 1 piece
● Packaging: Customizable wooden crate/carton
● Delivery: 3-20 working days (express: DHL/FedEx; sea freight for bulk)
● Payment: L/C, T/T, Western Union; tracking number provided in 24hrs
● After-Sales Service：24-hour technical support, global service network