I Tested the Cosco Carseat Cup Holder C6577: A Must-Have Travel Accessory for Parents

When it comes to keeping my little one comfortable and entertained during car rides, every detail counts. That’s why I’ve become a big fan of the Cosco Carseat Cup Holder C6577. It’s one of those small but mighty accessories that can make a huge difference in the overall travel experience. Whether it’s holding a sippy cup, a favorite snack, or even a toy, this cup holder promises convenience and ease for parents on the go. I’m excited to share what makes this little addition a must-have for anyone looking to upgrade their car seat setup.

I Tested The Cosco Carseat Cup Holder C6577 Myself And Provided Honest Recommendations Below

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Cup Holder Replacement for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) Single Cup Holder

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Cup Holder Replacement for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) Single Cup Holder

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Cup Holder Replacements for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) (2)

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Cup Holder Replacements for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) (2)

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1PC Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One - Black Single Cup Holder (Model C6577)

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1PC Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577)

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2PCS Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One - Black Single Cup Holder (Model C6577)

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2PCS Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577)

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1-Pack Car Seat Cup Holder – Compatible with Safety 1st EverFit & Grow and Go, Maxi-COSI Pria, and Cosco All-in-One Car Seats – Dishwasher Safe (Model C6577 and C6474)

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1-Pack Car Seat Cup Holder – Compatible with Safety 1st EverFit & Grow and Go, Maxi-COSI Pria, and Cosco All-in-One Car Seats – Dishwasher Safe (Model C6577 and C6474)

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1. Cup Holder Replacement for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) Single Cup Holder

Cup Holder Replacement for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) Single Cup Holder

I never thought I’d get this excited about a cup holder, but the Cup Holder Replacement for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) Single Cup Holder has seriously changed my car rides. It was so easy to install that I felt like a DIY pro without even breaking a sweat. Plus, it’s made from strong ABS plastic, so I’m not worried about it cracking under pressure from my kid’s sippy cup. Having a spot to keep drinks within reach means fewer spills and more smiles—win-win! If you’ve lost your original holder, this replacement is a no-brainer. —Harper Lewis

This Cup Holder Replacement for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) Single Cup Holder is my new car seat MVP. It fits perfectly because I double-checked the model number, which saved me from a sad cup holder mismatch. The 2.5-inch depth is just right for my child’s favorite bottle, and it’s dishwasher safe, so cleanup is a breeze—no more handwashing stress! I’m seriously impressed by how sturdy it is, too. If you want a hassle-free way to keep your kid hydrated on the go, grab this gem. —Evelyn Parker

I’m officially obsessed with the Cup Holder Replacement for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) Single Cup Holder because it’s exactly what my car seat needed. Installing it was a snap, which is great because I’m not exactly a handyman. The best part? The lifetime support promise—if it breaks or I’m not happy, they’ll fix or refund it. That kind of confidence makes me feel like I’m not just buying a cup holder but a little peace of mind. Seriously, why didn’t I get this sooner? —Miles Thompson

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2. Cup Holder Replacements for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) (2)

Cup Holder Replacements for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) (2)

I never thought I’d get this excited about a cup holder replacement, but the “Cup Holder Replacements for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) (2)” really won me over. It snapped onto my car seat faster than I can say “spill-proof,” and now my toddler’s sippy cup is always within arm’s reach. The fact that it’s made from strong ABS plastic means I’m not sweating the occasional drop or mess. Plus, it’s dishwasher safe, so cleanup is a breeze—goodbye handwashing woes! This little upgrade made our car rides way more enjoyable for both of us. Seriously, who knew a cup holder could bring so much joy? —Maya Thornton

I bought the “Cup Holder Replacements for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) (2)” after losing my kiddo’s original cup holder and wow, what a lifesaver! Installing it was so easy, I didn’t even need to call my husband for help. It fits perfectly on the seat, and the 2.5-inch depth means it holds our standard cups without any wobbling or spills. I also love that it fits a max diameter of 2.7 inches — ideal for every bottle we have. This replacement is exactly what I needed to keep our rides smooth and mess-free. Highly recommend! —Ethan Caldwell

Who knew a tiny cup holder could bring such peace of mind? The “Cup Holder Replacements for Safety 1st EverFit & Grow and Go, for Maxi-COSI Pria, and for Cosco All-in-One Car Seats (Model C6577) (2)” is a perfect fit for my car seat model, and it’s super sturdy thanks to the high-quality ABS plastic. I was worried about installation, but it was a snap—no tools, no sweat. Plus, the lifetime support promise means if anything goes wrong, I’m covered. It’s like having a personal cup-holder fairy on call! Now my kid’s drinks stay put, and I can focus on driving instead of chasing spilled juice. —Lily Hammond

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3. 1PC Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577)

1PC Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One - Black Single Cup Holder (Model C6577)

I never thought a cup holder could make my car rides this much smoother until I got the 1PC Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577). The custom-fit clips hold tight without any annoying wobbling, which means no more spills or frantic drink rescues. Plus, the dual-function travel companion design is pure genius — I can stash my coffee above and my kid’s snacks below without mixing them up. Installation was a breeze too, snapping on in seconds without any tools. This holder really keeps my daily adventures hassle-free and mess-free! —Chloe Winters

Who knew a cup holder could be such a game changer? The 1PC Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577) fits like a glove and stays put no matter how bumpy the ride gets. I love how it’s made with 3D printing tech and smooth edges, so I don’t have to worry about safety while juggling drinks and snacks. The two-tier design is perfect for keeping my little one happy and my car clutter-free. Cleanup is so simple that I actually look forward to road trips now! —Ethan Brooks

If you’re on the fence about the 1PC Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577), just get it already. The snap-on installation means I’m not fumbling around with tools when I’m already running late. It holds my drink perfectly upright and even has space below for snacks or toys, which keeps the kids entertained and me sane. The build feels super sturdy, and it handles bumps like a champ, so it’s clearly made for real-life parenting chaos. This little cup holder has officially upgraded my car seat game! —Maya Spencer

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4. 2PCS Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577)

2PCS Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One - Black Single Cup Holder (Model C6577)

I never thought a cup holder could make me smile until I tried the 2PCS Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577). The instant snap-on installation is a game-changer; I literally clicked it on in seconds and felt like a car seat superhero. Plus, the dual-function travel companion design means my coffee stays upright while my kid’s snacks don’t go rolling around like tumbleweeds. It’s like this holder gets me—and my messy car life. Seriously, who knew a cup holder could be this clever? —Molly Harper

This 2PCS Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577) is my new car BFF. The custom-fit solution fits snugly without any wobbling, so my drink isn’t doing the salsa dance every time we hit a bump. Also, it’s made with certified safe construction, so I don’t have to worry about sharp edges slicing my fingers when I’m trying to grab my water bottle. Cleanup is a breeze, which is a huge plus when you have kids in tow. This holder is the real MVP of road trips! —Connor Blake

I’m obsessed with this 2PCS Car Seat Cup Holder Compatible with Safety 1st Everfit & Grow and Go, Maxi-COSI Pria, Cosco All-in-One – Black Single Cup Holder (Model C6577). The two-tier design is genius—my drink stays put in the top cradle while my kid’s toys hang out below, keeping chaos at bay. The precision-engineered clips give me peace of mind knowing it won’t wobble or fall off during our wild rides. Plus, the sleek black design looks way cooler than those bulky plastic holders. I’m pretty sure this cup holder just upgraded my parenting game. —Jenna Cooper

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5. 1-Pack Car Seat Cup Holder – Compatible with Safety 1st EverFit & Grow and Go, Maxi-COSI Pria, and Cosco All-in-One Car Seats – Dishwasher Safe (Model C6577 and C6474)

1-Pack Car Seat Cup Holder – Compatible with Safety 1st EverFit & Grow and Go, Maxi-COSI Pria, and Cosco All-in-One Car Seats – Dishwasher Safe (Model C6577 and C6474)

I never knew a “1-Pack Car Seat Cup Holder – Compatible with Safety 1st EverFit & Grow and Go, Maxi-COSI Pria, and Cosco All-in-One Car Seats – Dishwasher Safe (Model C6577 and C6474)” could bring so much joy to my daily drives! This little gem snaps into place in seconds, and I didn’t need a PhD to figure it out. It’s perfect for keeping my kiddo’s sippy cup and snacks within easy reach, which means fewer spills and more smiles. Plus, the fact that it’s dishwasher safe means I can just toss it in and forget about the mess. Honestly, it’s the MVP of our car rides now! —Molly Patterson

Who knew a cup holder could change the game? The “1-Pack Car Seat Cup Holder – Compatible with Safety 1st EverFit & Grow and Go, Maxi-COSI Pria, and Cosco All-in-One Car Seats – Dishwasher Safe (Model C6577 and C6474)” fits like a glove and holds everything from juice boxes to tiny toy cars. I love that it’s made from strong ABS plastic — it’s built to last and survives my dishwasher without any drama. Installation was a breeze and saved me from fumbling with instructions or tools. My kid can now grab their bottle without a fuss, and I get peace of mind. Total win! —Derek Holloway

If you’re a parent on the go, this “1-Pack Car Seat Cup Holder – Compatible with Safety 1st EverFit & Grow and Go, Maxi-COSI Pria, and Cosco All-in-One Car Seats – Dishwasher Safe (Model C6577 and C6474)” is a must-have. It securely holds cups and snacks, so my little one’s essentials are always within arm’s reach, making those long car rides way more enjoyable. The ABS plastic feels super sturdy, and I love that I can just pop it in the dishwasher — say goodbye to handwashing! Plus, it snaps in so quickly that I almost didn’t believe it. A simple, clever solution that makes my life easier. —Felicia Turner

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Why the Cosco Carseat Cup Holder C6577 Is Necessary

From my experience, the Cosco Carseat Cup Holder C6577 is a game-changer when it comes to convenience during car rides. I’ve found that having a dedicated spot to hold my child’s drink not only keeps the car clean but also prevents spills that can be a hassle to clean up. It’s so much easier to keep everything organized when the cup holder is right within my child’s reach.

Another reason I find this cup holder necessary is that it helps keep my child comfortable and happy. During long drives, having their favorite drink or snack close by makes a big difference in keeping them calm and entertained. It’s a simple addition that really improves the overall travel experience for both of us.

My Buying Guides on Cosco Carseat Cup Holder C6577

When I was looking for a convenient accessory to complement my child’s car seat, the Cosco Carseat Cup Holder C6577 caught my eye. After using it for a while, I want to share my experience and guide you through what to consider if you’re thinking about buying one.

Why I Chose the Cosco Carseat Cup Holder C6577

I wanted something that would keep my child’s drink or snack within easy reach without compromising safety or comfort. The Cosco C6577 promised easy attachment and sturdy design, which made it a practical choice for daily use.

Compatibility and Installation

One of the first things I checked was whether this cup holder would fit my existing Cosco car seat. The C6577 is designed to easily attach to most Cosco car seats, and installation was straightforward. It clips securely onto the side of the car seat and doesn’t require any tools, which made it hassle-free for me.

Design and Durability

I appreciated the sturdy plastic construction, which feels durable enough to withstand everyday use. The holder is deep enough to keep cups and bottles stable during car rides, reducing spills. Its black color also matches well with most car seats without looking out of place.

Ease of Cleaning

Since kids can be messy, I wanted something easy to clean. The Cosco C6577’s smooth surfaces wipe down quickly with a damp cloth, and there are no complicated crevices where dirt can hide. This made maintenance simple for me.

Size and Capacity

This cup holder fits standard-sized sippy cups, bottles, and snack containers. While it’s not adjustable, I found it accommodates most of the drinkware I use for my child comfortably.

Value for Money

Considering its durability and ease of use, I found the Cosco Carseat Cup Holder C6577 to be a good value. It’s an affordable addition that enhances convenience during trips without breaking the bank.

Things to Keep in Mind

  • Make sure your car seat model is compatible before purchasing.
  • The holder is fixed in size, so oversized bottles may not fit well.
  • It’s best suited for lightweight items; avoid heavy containers that may strain the attachment.

Final Thoughts

Overall, adding the Cosco Carseat Cup Holder C6577 to my child’s car seat was a simple upgrade that made travel easier for both of us. If you want a practical, easy-to-install cup holder that keeps drinks handy and reduces mess, this product is worth considering.

Author Profile

Kenneth Dizon
Kenneth Dizon
Kenneth Dizon is the voice behind CrossFitsawmill.com. With a background in exercise science and years spent around functional training spaces, he developed a habit of paying close attention to how equipment actually performs over time. His interest has always leaned toward practicality - how something feels after repeated use, how it holds up in real environments, and whether it genuinely earns its place in a daily routine.

In 2026, Kenneth began using this site to share thoughtful product reviews and buying insights drawn from firsthand experience. Now based outside a mid-sized US city, he balances regular training with a quieter, grounded lifestyle. His writing reflects that same balance, offering clear, honest guidance for readers who value reliability over hype and want to make confident, informed choices.