Skip to product information
FOR FREIGHTLINER DEF HEADER 04-35649-002 Replaces 04-31354-004 and 04-31354-003
$589.39
Sale price
$589.39
Regular price
Quantity
Pickup currently not available
Secure Checkout • Encrypted Payments
Free Shipping
Contiguous U.S.
1-Year Warranty
Parts you can rely on
30-Day Returns
Hassle-free returns
Need help confirming fitment?
Talk with a parts expert today.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I needed a forklift part and wasn’t sure which one fit. They asked for the model and serial number, got back to me quickly, and made sure I ordered the right one. Really helpful.
Randy W. — Verified customer
Equipment Fitment
Review the equipment and model information below. Fitment can vary by serial number, production date, or machine configuration, so confirm your model and reference numbers before ordering.
Equipment / model
Product Overview
Ensure your heavy-duty truck remains compliant and efficient with this high-quality aftermarket DEF header. Designed specifically for Freightliner systems, this component provides reliable fluid level and temperature monitoring to keep your emissions system functioning at its peak. Please note that this is a premium aftermarket replacement part and is not an original equipment manufacturer (OEM) part, offering you a cost-effective solution without compromising on durability or performance.
Key Features & Benefits
- Reliable Aftermarket Construction: Engineered to meet or exceed industry standards for long-lasting service life.
- Perfect Interchange: Specifically designed to replace part numbers 04-35649-002, 04-31354-004, and 04-31354-003.
- Accurate Monitoring: High-precision sensors ensure your vehicle's computer receives correct DEF levels and temperature data.
- Cost-Efficient: Get the performance you need for your Freightliner at a fraction of the cost of OEM components.
Compatible Models
- Freightliner Heavy-Duty Trucks
- Various models utilizing the 04-35649-002 header assembly
- Compatible with systems requiring interchange numbers 04-31354-004 and 04-31354-003
Product Specifications
- Part Type: DEF Header Unit
- Condition: Brand New Aftermarket
- Primary Part Number: 04-35649-002
- Interchange Part Numbers: 04-31354-004, 04-31354-003
- Fitment Type: Direct Replacement
Frequently Asked Questions
Is this an OEM part?
No, this is a high-quality aftermarket part designed to replace the original equipment. It is built to provide equivalent performance and fitment at a more accessible price point.
How do I confirm compatibility?
The most reliable way to confirm fitment is to match the part number on your existing unit with 04-35649-002, 04-31354-004, or 04-31354-003. We also recommend checking your vehicle's serial number or VIN with your service manual.
Important: This is a premium aftermarket part and is not manufactured by the original equipment manufacturer (OEM). Brand names and model numbers are used for reference purposes only. Compatibility may vary depending on the machine's serial number. Please verify fitment before purchase.