ranroswang@hksparkling.com 
+86 138 2341 8469
16429-03040 Engine Cylinder Head for Kubota Excavator KX121-3 KX161-3 U45
The 16429-03040 Cylinder Head is a high-precision engine component specifically designed for Kubota KX121, KX161, and U45 excavators powered by V2203/V2403 engines. Manufactured from premium alloy cast iron, it ensures exceptional thermal stability and pressure resistance, restoring your engine's compression and fuel efficiency to factory standards.
Dear Valued Partners,
Thank you for choosing SPARKLING MACHINERY, your professional supplier for construction machinery brake and transmission parts.
The SPARKLING MACHINERY NEW 16429-03040 Engine Cylinder Head Photo:
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Premium Casting: Advanced sand-casting technology prevents internal cracks and ensures uniform wall thickness.
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Heat Resistance: High-grade alloy material withstands long-term high-temperature operation without warping.
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Perfect Alignment: CNC-machined valve seats and bolt holes ensure a 100% accurate fit for fast installation.
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Strict QC: Each head is pressure-tested for leaks (water and oil passages) before leaving the warehouse.
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- Machine Compatibility & Part Number Reference：
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| Machine Model | Engine Type | Part Number | Component |
| Kubota KX121-3 | V2203-M | 16429-03040 | Cylinder Head |
| Kubota KX161-3 | V2403-M | 16429-03040 | Cylinder Head |
| Kubota U45 | V2203 / V2403 | 16429-03040 | Cylinder Head |
| Kubota L Series | V2203 Tractor | 16429-03040 | Cylinder Head |
Q&A
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Q1: Does this cylinder head come with valves and springs installed?
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A: This listing is for the bare cylinder head. However, we also offer the "Complete Cylinder Head Assembly" with valves pre-installed. Please contact us for details.
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Q2: Should I replace the cylinder head gasket and bolts at the same time?
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A: Yes, we strongly recommend using a new head gasket and high-strength bolts to ensure a perfect seal and prevent future leaks.
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Q3: How do I verify this fits my specific V2203 engine?
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A: Please provide the engine serial number found on the side of the block. Our technical team will verify the compatibility for you.
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📦 Packing
1. Packaging methods: Carton box + Wooden case/Pallet + Anti-rust treatment
2. Export-standard packaging to ensure safety during transportation
3. Custom packaging available upon request
4. Dimensions and weight can be provided for freight calculation
🚚 Shipping
1. Available shipping methods: Sea freight, Air freight, Express delivery (DHL, UPS, FedEx, etc.)
2. LCL (Less than Container Load) and FCL (Full Container Load) options are supported
3. For Russian clients, we can introduce the forwarder agent to you
4. Delivery time: Ships within 1-3 working days after payment (for items in stock)
💳 Payment
1. Accepted methods: T/T, Bank Transfer, PayPal, Alipay, WeChat Pay, Western Union
2. Deposit + balance payment available for large or custom orders
3. Flexible payment options—feel free to contact us for details
📌 Frequently Asked Questions (FAQs)
Q: Which excavator models is this part compatible with?
A: This product is compatible with major brands such as CAT, KOMATSU, HITACHI, and more. Custom specifications are also available.
Q: How can I make sure I’m selecting the correct part?
A: You can send us a photo of the old part, part number, or your excavator model, and we will help you confirm the right match.
Q: Is there a warranty for this product?
A: Yes, we offer a 6-month quality guarantee under normal use.
Get a free quote
We are committed to producing the highest quality products at the most competitive prices. Therefore, we sincerely invite all interested companies to contact us for more information.
Contact us
Email: ranroswang@hksparkling.com
Wechat: +86 136 0901 0879
Skype: foreverlucia1
WhatsApp: +86 136 0901 0879
Address: No. 514-515, Hulin Road, Tianhe District, Guangzhou, China.
Sparkling Machinery Co.,Ltd
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Whatsapp: +8613609010879