For a 2013 Toyota Highlander, you’ll want a direct-fit rear under cover that matches the 3.5L V6 and bolts to the factory points without drilling. In 2026, the best picks are OEM-style molded plastic options like Go-Parts or AUTOS PARTS PLUS, since they offer solid fitment, road-debris protection, and reliable warranties. Choose one that matches your part number, and you’ll avoid rattles, misalignment, and headaches. Keep going, and you’ll see the top options in more detail.
| Rareelectrical Under Engine Cover for Lexus/Toyota Models |  | Best Overall | Part Type: Engine splash shield | Fitment: Vehicle specific | Position: Rear | VIEW LATEST PRICE | Read Our Analysis |
| Three T Cargo Liner for Toyota Highlander |  | Best Cargo Protection | Part Type: Cargo liner | Fitment: Toyota Highlander specific | Position: Rear trunk | VIEW LATEST PRICE | Read Our Analysis |
| Go-Parts Rear Lower Valance Cover for Highlander 2011-2013 |  | Best OEM Fit | Part Type: Rear lower valance cover | Fitment: 2011-2013 Highlander specific | Position: Rear lower | VIEW LATEST PRICE | Read Our Analysis |
| Garage-Pro Rear Engine Splash Shield for Lexus RX350/RX450H |  | Best Replacement | Part Type: Engine splash shield | Fitment: Direct fit | Position: Rear | VIEW LATEST PRICE | Read Our Analysis |
| AUTOS PARTS PLUS Rear Engine Splash Shield Cover |  | Best Value | Part Type: Rear engine splash shield | Fitment: Direct replacement | Position: Rear | VIEW LATEST PRICE | Read Our Analysis |
| SecosAutoparts Rear Bumper Lower Cover for Toyota Highlander |  | Best for 2013 | Part Type: Rear bumper lower cover | Fitment: Highlander specific | Position: Rear | VIEW LATEST PRICE | Read Our Analysis |
| OE Replacement Toyota Highlander Undercar Shield (TO1228183) |  | OE Alternative | Part Type: Undercar shield | Fitment: OE replacement | Position: Underbody | VIEW LATEST PRICE | Read Our Analysis |
| Replacement Undercar Shield fits 2011-2019 Toyota Highlander |  | Direct Fit Pick | Part Type: Undercar shield | Fitment: Factory fit | Position: Underbody | VIEW LATEST PRICE | Read Our Analysis |
| Toyota Highlander/Sienna Rear Engine Splash Shield (LX1228131) |  | Reliable Choice | Part Type: Rear engine splash shield | Fitment: OEM matched fit | Position: Rear | VIEW LATEST PRICE | Read Our Analysis |
| Rear Transmission Splash Shield for Lexus RX Highlander Sienna |  | Heavy-Duty Option | Part Type: Rear transmission splash shield | Fitment: Direct-fit OE | Position: Rear | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Rareelectrical Under Engine Cover for Lexus/Toyota Models
If you need a reliable rear splash shield, this Rareelectrical cover stands out as the top overall pick. You get a new plastic engine splash shield built to protect your engine and undercarriage from road debris, water, snow, and dirt. It fits select Lexus RX350 and RX450h models, plus Toyota Highlander Hybrid, Highlander LE, Limited, and XLE trims, and Sienna AWD variants. It’s a rear-position, vehicle-specific part with OEM references 514420E020 and 5144248040. You can install it with direct bolt-on ease, but verify your part number and application first. It includes a 1-year warranty and 30-day return guarantee.
- Part Type:Engine splash shield
- Fitment:Vehicle specific
- Position:Rear
- Material:Plastic
- Warranty:1 year
- Installation:Direct bolt-on
- Additional Feature:Rear-position coverage
- Additional Feature:9-pound weight
- Additional Feature:Vehicle-specific fit
Three T Cargo Liner for Toyota Highlander
The Three T Cargo Liner suits 2009–2014 Toyota Highlander owners who want reliable trunk protection. You get the Three T Car Rear Trunk Cargo Liner Cover Mat, built from thermal plastic foam that’s waterproof, chemical resistant, and flexible. It shields your cargo area from mud, dust, snow, water, dead leaves, and trash, while also stopping spills from soaking into carpets. You can lay it in easily, shape it to fit the contours, and remove it for washing. It’s non-toxic, so it’s safe for you and your passengers. One rear trunk mat comes in the package.
- Part Type:Cargo liner
- Fitment:Toyota Highlander specific
- Position:Rear trunk
- Material:Thermal plastic foam
- Warranty:Not specified
- Installation:Lay-in fit
- Additional Feature:Thermal plastic foam
- Additional Feature:Chemical resistant
- Additional Feature:Customizable contours
Go-Parts Rear Lower Valance Cover for Highlander 2011-2013
Go-Parts’ Rear Lower Valance Cover suits Highlander owners who want an OEM-style replacement that bolts on cleanly. You can use it on 2011-2013 Base, Hybrid, Hybrid Limited, Limited, Plus, and SE models with 2.7L, 3.5L V6, or FHEV powertrains. Its textured finish matches the factory look, and it meets or exceeds OEM and safety standards. You’ll get a direct bolt-on fit for AWD or FWD SUVs with automatic or CVT transmissions. Go-Parts backs it with a lifetime warranty, and ISTA-certified packaging helps keep it safe in transit.
- Part Type:Rear lower valance cover
- Fitment:2011-2013 Highlander specific
- Position:Rear lower
- Material:Textured plastic
- Warranty:Lifetime
- Installation:Direct bolt-on
- Additional Feature:Textured finish
- Additional Feature:ISTA certified packaging
- Additional Feature:Lifetime warranty
Garage-Pro Rear Engine Splash Shield for Lexus RX350/RX450H
Garage-Pro’s rear engine splash shield is your ideal OE-style replacement for AWD Toyota and Lexus models. You can install it on Lexus RX350 and RX450h models from 2010-2015, plus Toyota Sienna 2011-2018 and Highlander 2011-2019. It’s a direct-fit aftermarket part built for all-wheel-drive setups, so you won’t waste time forcing alignment. You get OE-style quality, compatibility with 3.5L and 2.7L engines, and a 1-year unlimited mileage warranty. The shield weighs 2.3 pounds, uses part number JCWREPL310126GP, and matches interchange numbers 514420E020, 5144248040, and LX1228131.
- Part Type:Engine splash shield
- Fitment:Direct fit
- Position:Rear
- Material:Plastic
- Warranty:1 year
- Installation:Direct fit
- Additional Feature:OE replacement
- Additional Feature:All-wheel-drive compatible
- Additional Feature:Unlimited mileage coverage
AUTOS PARTS PLUS Rear Engine Splash Shield Cover
AUTOS PARTS PLUS gives you a direct-fit rear splash shield with solid value for Highlander owners. You get a new plastic under cover that matches OEM numbers 514420E020 and 5144248040, so it fits like a true replacement. It works on 2014-2019 Toyota Highlander LE, Limited, and XLE trims, plus select Highlander Hybrid models. At 2.5 pounds, it’s light but sturdy enough for everyday protection. You also get one rear engine splash shield under cover, a 1-year warranty, and Amazon’s 30-day return guarantee. If you’re unsure, share your year, make, model, and engine size.
- Part Type:Rear engine splash shield
- Fitment:Direct replacement
- Position:Rear
- Material:Plastic
- Warranty:1 year
- Installation:Direct replacement
- Additional Feature:Included components: one cover
- Additional Feature:Round-the-clock assistance
- Additional Feature:2.5-pound weight
SecosAutoparts Rear Bumper Lower Cover for Toyota Highlander
SecosAutoparts fits 2011–2013 Highlanders with a clean rear bumper lower cover. You can use it on rear-position repairs when you need part numbers 52169-0E050, 52169 0E050, 521690E050, or TO1115102. It’s built with excellent craftsmanship and goes through strict inspection, plus machine testing before it leaves the factory. You get one rear bumper cover in the package. Before you buy, check the description to confirm fitment. If you run into an issue, contact support first. Warranty details are available on request, and Amazon’s 30-day return guarantee applies.
- Part Type:Rear bumper lower cover
- Fitment:Highlander specific
- Position:Rear
- Material:Plastic
- Warranty:Not specified
- Installation:Installation-ready
- Additional Feature:Strict inspection process
- Additional Feature:Machinery-tested before shipping
- Additional Feature:Contact-before-return support
OE Replacement Toyota Highlander Undercar Shield (TO1228183)
If you want a direct-fit oe alternative, this TO1228183 undercar shield is a strong pick. You get a new, high-quality aftermarket replacement built to meet OEM specifications, so it should fit your 2011-2013 Highlander without guesswork. It matches OE replacement number 514410E060 and uses Partslink number TO1228183, which makes cross-checking easier. At 32 x 4 x 44 inches and 1.6 pounds, it’s lightweight yet sized for the job. You can also count on a 30-day return guarantee, and warranty details are available upon request.
- Part Type:Undercar shield
- Fitment:OE replacement
- Position:Underbody
- Material:Molded plastic
- Warranty:Not specified
- Installation:Direct fit
- Additional Feature:Partslink TO1228183
- Additional Feature:OE replacement 514410E060
- Additional Feature:32x4x44 inches
Replacement Undercar Shield fits 2011-2019 Toyota Highlander
Built for 2011-2019 Highlanders, this direct fit pick replaces a damaged undercar shield fast. You’ll get factory-style mounting points, so the shield lines up with your vehicle’s existing hardware. It helps protect the underside and engine area from rocks, water, and road debris. If yours is cracked, missing, or has lost fasteners after an impact or years of use, this molded plastic cover gives you a practical fix. It’s built for underbody exposure, checked for fit and hole alignment, and installs with factory fasteners or suitable replacement hardware.
- Part Type:Undercar shield
- Fitment:Factory fit
- Position:Underbody
- Material:Molded plastic
- Warranty:Not specified
- Installation:Factory mount fit
- Additional Feature:Factory mounting points
- Additional Feature:Molded plastic construction
- Additional Feature:Inspected for alignment
Toyota Highlander/Sienna Rear Engine Splash Shield (LX1228131)
The Karparts360 rear engine splash shield is a reliable choice for Highlander, Sienna, and Lexus RX owners. You can fit it on 2011-2018 Toyota Sienna, 2014-2018 Highlander, and 2010-2015 Lexus RX350/RX450H models. It carries OEM 51442E25 and Partslink LX1228131 numbers, plus interchange codes 514420E020 and 5144248040. You get a rear engine splash shield built from durable materials and tested to meet DOT and SAE standards. Confirm your part number before ordering, and you’ll benefit from a 30-day Amazon return guarantee plus warranty info on request.
- Part Type:Rear engine splash shield
- Fitment:OEM matched fit
- Position:Rear
- Material:Durable materials
- Warranty:Not specified
- Installation:Fitment matched
- Additional Feature:DOT & SAE
- Additional Feature:High-quality materials
- Additional Feature:Comprehensive evaluation testing
Rear Transmission Splash Shield for Lexus RX Highlander Sienna
Drivers needing a direct-fit, heavy-duty option will appreciate this rear transmission splash shield. You can use it on 2010-2015 Lexus RX models, 2011-2018 Toyota Highlanders, and 2011-2018 Toyota Siennas. It matches factory specifications, so you’ll restore the original look and function without hassle. Each unit gets rigorously tested for reliable performance and accurate fitment. Because it’s designed for direct installation, you won’t need modifications, and you’ll save time during replacement. Built from durable materials, it stands up to daily driving and tougher conditions, giving you long-lasting strength and dependable protection underneath.
- Part Type:Rear transmission splash shield
- Fitment:Direct-fit OE
- Position:Rear
- Material:Durable materials
- Warranty:Not specified
- Installation:No-mod install
- Additional Feature:Restores original look
- Additional Feature:Daily-use durability
- Additional Feature:No modifications needed
Factors to Consider When Choosing a 2013 Toyota Highlander Rear Under Cover
When you choose a rear under cover for your 2013 Toyota Highlander, make sure it’s an OEM part match and fits your vehicle exactly. You’ll also want to check material durability and how easy it is to install so you don’t waste time or money. A solid warranty can give you extra confidence in the cover you pick.
OEM Part Match
Matching the OEM part number is the safest way to choose a rear under cover for your 2013 Toyota Highlander, since it helps guarantee the part fits correctly and works with the vehicle’s design. You can usually find the correct number in your owner’s manual, from a Toyota dealership, or in a trusted online parts database. If you’re considering aftermarket options, check whether they list interchangeable OEM numbers, since that can point you to a valid replacement. A cover that meets or exceeds OEM specs can handle road debris and harsh weather better, so you’ll get stronger durability and performance. When you match the right part, you help protect engine components and avoid annoying rattles, looseness, or misalignment caused by an incorrect under cover.
Vehicle Fitment
A proper fit starts with confirming the rear under cover is made specifically for the 2013 Toyota Highlander, since fitment can differ by model year, trim, and engine configuration. You should verify that the part matches your Highlander’s engine, including the 3.5L V6 if that’s what you have, so the cover installs correctly and functions as intended. Cross-checking OEM numbers such as 514420E020 helps you confirm you’re choosing the right replacement. You’ll also want a direct bolt-on design, because it usually lines up with factory mounting points and avoids modifications or extra hardware. Before you buy, review your vehicle documentation and the manufacturer’s fitment notes. Those details help you confirm compatibility, reduce installation surprises, and make sure the under cover matches your exact Highlander setup.
Material Durability
Material durability matters because the rear under cover faces constant exposure to debris, moisture, road salt, oil, and heat. You should look for thermoplastic or molded plastic that resists impacts and abrasion, so it can handle daily driving and harsh weather. High-quality plastics often stay waterproof and shrug off chemicals, which helps prevent damage from salt, oil, and grime. Thicker material usually gives you better protection against flying debris and rough conditions, while UV-resistant construction helps stop fading and cracking from sun exposure. If you drive on uneven roads or off-road, choose a cover with enough flexibility to absorb shocks without splitting. That balance of strength and give can extend service life and keep your Highlander protected longer.
Installation Ease
Installation ease matters because a rear under cover that bolts on directly can save you time and frustration during the upgrade. You should look for a direct bolt-on design that uses your Highlander’s factory mounting points, since that usually means you won’t need special tools or extra drilling. A lighter cover can also make the job easier, especially when you’re aligning it under the vehicle. Clear instructions help you move through each step confidently and avoid guesswork. Before you buy, verify the OEM part number so you know the cover matches your 2013 Toyota Highlander exactly. When fitment is correct, you can install it smoothly, secure it properly, and finish the upgrade with less hassle and fewer delays.
Warranty Coverage
Once you’ve confirmed the rear under cover fits your 2013 Toyota Highlander, the next thing to check is warranty coverage. You’ll usually see protection ranging from one year to a lifetime, so compare offers before you buy. A strong warranty can save you money if the part fails early, and unlimited mileage coverage is especially useful if you drive often or rack up long trips. Don’t ignore the return policy, either; many sellers give you 30 days to send it back if it doesn’t fit or meet expectations. Read the warranty terms closely, because some require specific installation and proper use. Keep your receipt and order details handy, since you’ll need proof of purchase if you ever file a claim later.
Frequently Asked Questions
Does the Rear Under Cover Affect Highway Fuel Economy?
Yes, it can slightly help your highway fuel economy by smoothing airflow underneath your Highlander. You’ll usually notice only a small difference, but missing or damaged covers can let drag increase and MPG drop.
Can I Install the Rear Under Cover Without a Lift?
Yes, you can install it without a lift, but the hidden catch is access: you’ll need ramps or sturdy jack stands, basic tools, and patience, because the rear fasteners can be awkward underneath.
How Do I Know if My Highlander Has Missing Mounting Clips?
You’ll know if your Highlander’s missing mounting clips when the under cover hangs loose, rattles, or won’t line up with holes. Check for empty fastener holes, broken tabs, or missing push pins underneath.
Will This Cover Interfere With Aftermarket Exhaust Components?
It can, if your aftermarket exhaust sits lower or wider than stock. You should check clearance before installing, since the cover may touch pipes, resonators, or hangers and cause rattles, heat damage, or fitment issues.
Is the Rear Under Cover Different on AWD and FWD Models?
Yes, you’ll usually find differences between AWD and FWD rear under covers because AWD models need extra drivetrain clearance. You should verify your trim and drivetrain before ordering, since mounting points and cutouts can vary.
Conclusion
So, which rear under cover should you pick for your 2013 Toyota Highlander in 2026? It really comes down to fit, durability, and how much protection you want for daily driving. Whether you choose a direct replacement or a tougher aftermarket option, the right cover helps shield essential components from debris, water, and road damage. Take a close look at compatibility, materials, and reviews, and you’ll make a smart choice that keeps your Highlander protected.
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