Magnaflow 551903 Catalytic Converter
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Magnaflow 551903 Durable Stainless-Steel Construction
Keep the check engine light off with MagnaFlow California Grade CARB Compliant Direct-Fit Catalytic Converter. DIY installation is easy with the proper tools (no cutting or welding required). With features including mandrel-bent tubing to eliminate flow restrictions and stainless steel construction to resist corrosion, you can have confidence in the quality of this catalytic converter. Using state-of-the-art 3D scanning systems in the design process, the MagnaFlow metrology department ensures this new part to fit and function like the original equipment. This direct-fit catalytic converter is designed specifically for your vehicle. Avoid potential exhaust leaks by using the included gaskets to get a proper seal. This replacement part is designed to meet or exceed California Air Resource Board requirements, and has undergone additional testing to comply with CARB guidelines to allow for legal use in California and CARB restricted states, for the listed vehicles.
Features & Benefits
- Durable Stainless-Steel Construction
- Mandrel bent piping, precisely manufactured flared receivers, oem-like o2 port locations and integrated butt joints make installation easy
- Spun-body design ensures excellent corrosion resistance
- State-of-the-art 3d scanning is used to ensure this direct-fit catalytic converter perfectly fits your vehicle
- Extensive testing and certification processes are followed to guarantee that meets emissions standards set by california air resources board
- Limited 5 year or 50,000 mile warranty
Specifications
| Product Type | Durable Stainless-Steel Construction |
| Material | Durable Stainless-Steel Construction |
| Weight | 15 lb |
| Dimensions | 21.25 x 6.5 x 6.5 in |
| Brand | Magnaflow |
| Manufacturer Part Number | 551903 |
| UPC | 888563201221 |
Frequently Asked Questions
How do I verify fitment before ordering?
Compare manufacturer part number 551903 against your existing part and your vehicle or equipment. Contact us with your make, model, and year if you need help confirming compatibility.
What are the key construction details?
Magnaflow features durable Stainless-Steel Construction. See Features & Benefits and Specifications for the full list.
How much does this product weigh?
This item weighs approximately 15 lb.
Shipping & Returns
Shipping & Returns
Shipping:
Most qualifying in-stock orders are processed within one business day. In the contiguous 48 states, eligible in-stock orders placed before 12:00 PM (noon) in the customer's local time zone typically ship the same business day. Orders shipping to Alaska or Hawaii use a 12:00 PM Pacific Time cutoff (California time). These cutoffs apply only to eligible in-stock orders and are not guaranteed shipping or delivery times. Same-day shipping refers to processing and carrier handoff, not delivery. Weekends and holidays are excluded.
Payment verification, address verification, fraud review, and inventory availability may take longer. Supplier-direct fulfillment, freight shipping, and special handling may also take longer.
Returns:
Eligible products may be returned within 60 days of delivery, subject to our Return Policy. Return authorization is required. Certain products are final sale or subject to manufacturer warranty procedures, shipping charges, and applicable restocking fees.
Please inspect your order promptly upon delivery. Shipping damage, incorrect items, missing components, or quantity shortages must be reported within 3 business days after delivery. Retain the product, original packaging, shipping labels, and photographs while your claim is reviewed.

