2016-2022 BMW X1 Trunk Storage Box: Fitment, Part Numbers, and Replacement
Your guide to the F48 BMW X1's side trunk storage compartment, including the critical left vs. right side fitment issue.
- The primary OEM part number 51477331419 is for the LEFT (driver's) side; fitment on the right side is not guaranteed.
- Replacement is extremely simple, requiring no tools and taking less than five minutes.
- When buying a used part, the most important checks are for cracks and verifying it's for the correct side of the vehicle.
- There are no direct-fit aftermarket versions available, making used OEM the most common and economical repair option.
Symptoms of a Failing Trunk Storage Box
As a simple plastic trim piece, the trunk storage box does not have mechanical or electrical functions. Failure is always related to physical damage. Common symptoms include:
- Cracks or Breaks: The most common issue is cracking or shattering of the plastic, often caused by dropping heavy or sharp objects into the trunk.
- Warping or Discoloration: Spills from chemicals like oil, cleaners, or other automotive fluids can stain or even warp the plastic over time. Extreme heat can also cause deformation.
- Broken Edges or Tabs: The edges that sit flush with the trunk floor can break off, creating a poor fit and an unsightly gap.
- Rattling Noises: A cracked or broken box may no longer fit snugly in its recess, causing it to vibrate and rattle as you drive.
Buying a Used Trunk Floor Storage Box
Purchasing a used OEM storage box is a cost-effective way to restore the clean look of your trunk. Since there are no direct-fit aftermarket versions, a used original part is the best option. Here’s what to check before you buy:
1. Confirm the Correct Side
Warning: The most critical step is verifying which side of the vehicle the box is for. The primary OEM part number, 51477331419, is for the left (driver's) side of the trunk. While some parts diagrams suggest it may fit both sides, listings for used parts clearly distinguish between left and right versions. To ensure a perfect fit, only purchase a part that is confirmed to be from the specific side you need.
2. Physical Inspection
- Check for Cracks: Carefully inspect the entire box, especially the bottom and corners, for any cracks, no matter how small. A small crack can easily spread under the weight of stored items.
- Examine for Warping: Place the box on a flat surface to ensure it sits level and has not been warped by heat or chemical exposure.
- Look for Stains: Check for any deep stains or chemical residue that might indicate the plastic has been weakened.
- Verify the Part Number: If possible, confirm the part number molded into the plastic. You should see '51477331419' or the last seven digits, '7331419'.
Pro Tip: When you remove your old storage box, check the metal well underneath for any signs of moisture. Water can sometimes leak into this area, and if it does, it can cause damage to sensitive electronic modules that are located nearby. A water spill was noted by one owner to cause temporary ABS and traction control warnings.
Replacement Procedure
Replacing the trunk storage box is one of the easiest repairs you can perform on your BMW X1.
- Difficulty: 1 out of 5
- Time: Less than 5 minutes
- Tools Needed: None
Step-by-Step Guide
- Open the rear hatch.
- Lift the main trunk floor panel to access the side storage wells.
- Simply lift the old, damaged storage box straight out of its cavity. It is not held in by any screws or clips.
- Clean any debris from the empty well.
- Place the new storage box into the cavity, ensuring it sits flush and is properly oriented.
- Lower the main trunk floor panel.
Known Issues, Recalls, and TSBs
There are no recalls or Technical Service Bulletins (TSBs) from BMW or the NHTSA that specifically relate to the trunk floor storage box for the 2016-2022 BMW X1. While other recalls exist for this vehicle generation concerning B-pillars and rollover sensors, none affect this trim part.
Cost Comparison
| Part Type | Estimated Cost |
|---|---|
| New OEM | $55 - $70 |
| Used OEM | $35 - $55 |
| New Aftermarket | Not Available |
| Shop Labor | $0 - $25 (Typically a self-install part) |
Frequently Asked Questions (FAQ)
Will part number 51477331419 fit the right (passenger) side of my X1?
Fitment is only guaranteed for the left (driver's) side. Some vendors list it for both sides, but there appear to be distinct parts for left and right to ensure a perfect fit. It is highly recommended to find a part specifically designated for the right side if that is what you need to replace.
Is this part difficult to install myself?
No, this is an extremely easy part to replace. It requires no tools and simply lifts out of the trunk well. The entire process takes less than five minutes.
Are there any aftermarket alternatives?
There are no known direct-fit aftermarket replacements for this specific storage bin. You can find generic trunk organizers, but for a factory look, your only options are a new or used OEM part.
What is the official BMW name for this part?
The official BMW terminology is 'Oddments Tray'. However, it is commonly referred to as a storage box, bin, or tray.
Technical Specifications
OEM Part Numbers: 51477331419 7331419
Material: Molded Plastic Placement: Rear Trunk, Left Side (Driver's Side)
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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