

Mercedes C Series W203 OM646 Connecting Rod Bolt | ELRING 434.490
Mercedes C-Class W203 OM646 Connecting Rod Bolt
ELRING 434.490 | Original Equipment (OEM) | 100% German Quality
This connecting rod bolt, designed for Mercedes C-Class W203 vehicles with the OM646 engine code, plays a critical role in the internal structure of the engine. This part connects the connecting rods, ensuring the smooth movement of the pistons. Made from high-quality materials, the ELRING 434.490 is known for its durability and reliability. As an indispensable part of the engine system, this bolt directly affects the engine's performance.
Product Features and Benefits
- OEM Compatibility: ELRING 434.490 fully complies with original equipment specifications. It is manufactured according to authorized service standards, ensuring no issues with part placement.
- Material Quality: This connecting rod bolt, made from high-quality steel, is resistant to wear and has a long lifespan. It provides high strength due to advanced manufacturing technology.
- Durability and Lifespan: The ELRING connecting rod bolt is designed to withstand up to 100,000 km. It maintains high performance even under challenging conditions.
- Performance: It enhances the engine's operational balance, improving fuel efficiency. By ensuring smooth piston movement, it reduces engine noise.
- Testing and Certification: Manufactured in accordance with ISO 9001 and TS 16949 standards. ELRING is recognized worldwide for high-quality spare part production.
Technical Details
| Manufacturer Brand | ELRING |
| Product Code (OE/OEM) | 434.490 |
| Part Type | Connecting Rod Bolt |
| Manufacturing Standard | OE equivalent / OEM |
| Origin | Germany |
| System | Engine |
Vehicle Compatibility
The ELRING 434.490 connecting rod bolt is compatible with Mercedes C-Class W203 vehicles. These vehicles, equipped with the OM646 engine code, were produced between 2000 and 2007. This part ensures the reliability of the engine's connecting rod system and enhances engine performance.
- Chassis Code: W203
- Engine Code: OM646
- Production Year Range: 2000-2007
- Trim/Variant: All variants
It is recommended to confirm with our contact line using your 17-digit VIN (chassis) number for the correct part selection.
Quality and Warranty
ELRING has a long-standing history in the automotive spare parts industry and serves as an OE supplier to many automotive manufacturers. It has proven its quality with ISO 9001 and TS 16949 certifications. ELRING produces spare parts for prestigious brands like Mercedes-Benz. In modern manufacturing facilities in Germany, it maintains high production standards.
Installation and Usage Notes
The installation of the connecting rod bolt is a precise operation that must be performed inside the engine. Therefore, it is recommended to exercise caution during installation. The bolt should be tightened to a specific torque value, typically between 25-30 Nm. After installation, it is advisable to start the engine and check the bolt again. Additionally, the connecting rod, piston, and other engine parts should also be inspected along with the connecting rod bolt.
Frequently Asked Questions
In which W203 models is this connecting rod bolt used?
The ELRING 434.490 connecting rod bolt is used in all OM646 engine models of the Mercedes C-Class W203 chassis code. These models were produced between 2000 and 2007.
Is it original or aftermarket?
ELRING is an original equipment manufacturer for Mercedes-Benz. This connecting rod bolt is produced to original part quality and offers higher durability compared to aftermarket parts.
How many kilometers does this connecting rod bolt last / when should it be replaced?
The ELRING 434.490 connecting rod bolt typically lasts up to 100,000 km. However, this duration may vary depending on the engine's operating conditions. It is recommended to replace it when signs of wear are observed.
Can I install it myself, or do I need to take it to a professional?
The installation of the connecting rod bolt is a precise operation that must be performed inside the engine. Therefore, it is recommended to consult a professional. If you do not have the necessary tools and knowledge, issues may arise during installation.
How long does it take to arrive, do I have a return right?
Your order will be shipped the same day. You have the right to return within 14 days. Additionally, sales are made with e-archive invoices. For any questions, you can reach us through our WhatsApp support line.
Advantages of German Parts Warehouse: Same-day shipping, 14-day return policy, sales with e-archive invoices, WhatsApp expert support line (wa.me/905382927219). Our stock information is updated in real-time; your order is confirmed only for items physically available. If you write to our contact line with your vehicle's chassis number, we will quickly provide you with the correct OE/equivalent part offer.
This product is equivalent to the following OEM/original part numbers. You can search by your vehicle's original part number.
- 1120380071 — MERCEDES-BENZ
- A1120380071 — MERCEDES-BENZ
Compatible vehicle information not yet added.
