Hey there, Scion xB enthusiasts! Ready to take your ride to the next level? The 2004 Scion xB is a boxy beauty with tons of potential for customization. Whether you're aiming for enhanced performance, a unique look, or just some cool creature comforts, the aftermarket parts scene has got you covered. Let's dive into some of the best upgrades you can snag for your beloved xB.

Performance Enhancements

When it comes to performance enhancements for your 2004 Scion xB, you have a plethora of options to consider. These upgrades are designed to boost your car's horsepower, improve handling, and enhance overall driving experience. Let's explore some of the most popular and effective performance parts. One of the easiest and most cost-effective ways to add a little pep to your xB's step is with a cold air intake. A cold air intake replaces the factory air box with a less restrictive system, allowing your engine to breathe easier. This results in a slight increase in horsepower and torque, as well as a sportier engine sound. Brands like K&N, AEM, and Injen offer great options for the xB. Upgrading your exhaust system is another fantastic way to improve performance. A cat-back exhaust system replaces everything from the catalytic converter back, reducing backpressure and allowing exhaust gases to flow more freely. This can lead to noticeable gains in horsepower and torque, especially when combined with a cold air intake. Look for systems from reputable brands like Borla, MagnaFlow, and Tanabe. Don't underestimate the importance of a good set of headers. Headers replace the factory exhaust manifold with a more efficient design, further reducing backpressure and improving exhaust flow. This can result in significant horsepower gains, especially in the mid-range. DC Sports and OBX Racing are popular choices for xB headers. For those seeking a more aggressive upgrade, consider performance camshafts. Upgrading your camshafts can significantly alter your engine's power curve, providing more power at higher RPMs. However, this upgrade is more involved and may require professional installation and tuning. Companies like Crower and Brian Crower offer performance camshafts for the xB. Last but not least, don't forget about engine tuning. A professional tune can optimize your engine's performance by adjusting parameters like fuel delivery, ignition timing, and air-fuel ratio. This can unleash hidden horsepower and improve overall drivability. Consider using a standalone ECU or a piggyback system like AEM FIC or Apexi SAFC. Remember to always consult with a professional tuner to ensure your engine is running safely and efficiently.

Suspension Upgrades

Alright, let's talk about suspension upgrades! Improving your Scion xB's suspension can dramatically transform its handling and ride quality. Whether you're aiming for better cornering, a smoother ride, or just a more aggressive stance, there's a suspension upgrade out there for you. First off, let's discuss lowering springs. Swapping out your factory springs for a set of lowering springs is a simple and relatively inexpensive way to lower your xB's ride height and improve its handling. Lowering springs reduce body roll and give your car a sportier look. Brands like Eibach, Tein, and H&R offer excellent lowering springs for the xB. For a more comprehensive upgrade, consider coilovers. Coilovers are adjustable suspension systems that allow you to fine-tune your car's ride height and damping characteristics. This gives you ultimate control over your car's handling and ride quality. Popular coilover brands for the xB include BC Racing, Megan Racing, and Tein. Upgrading your sway bars is another great way to improve handling. Sway bars, also known as anti-roll bars, reduce body roll during cornering, resulting in flatter and more stable handling. Installing a thicker sway bar or adding a rear sway bar can make a noticeable difference in your xB's cornering ability. Companies like Progress Technology and TRD offer sway bars for the xB. Don't forget about strut bars! Strut bars, also known as strut tower braces, connect the strut towers on either side of the car, reducing chassis flex and improving handling. A strut bar can help sharpen up your xB's steering response and make it feel more planted in corners. Cusco and Tanabe are well-known brands for strut bars. For those looking for the ultimate in adjustability, consider air suspension. Air suspension systems allow you to adjust your car's ride height on the fly, giving you the ability to slam your xB to the ground for a show or raise it up for daily driving. Air Lift Performance and AccuAir are popular choices for air suspension systems. Remember to always have your suspension upgrades installed by a qualified mechanic to ensure proper installation and alignment.

Exterior Modifications

Now, let's dive into the fun stuff: exterior modifications! The 2004 Scion xB is a blank canvas just begging for some personalized touches. Whether you're into subtle enhancements or full-blown transformations, there's an exterior mod out there to match your style. One of the most popular mods is a body kit. Body kits can completely change the look of your xB, giving it a more aggressive and sporty appearance. Look for body kits from reputable brands like VIS Racing, Duraflex, and Extreme Dimensions. These kits typically include front and rear bumpers, side skirts, and sometimes a rear spoiler. A simple yet effective mod is upgrading your wheels and tires. A fresh set of wheels can dramatically improve the look of your xB. Consider going for a larger diameter wheel with a lower profile tire for a sportier look. Popular wheel brands include Enkei, Konig, and XXR. When choosing tires, consider factors like grip, ride comfort, and treadwear. Don't underestimate the power of window tint. Window tint not only looks cool but also helps to reduce glare and keep your interior cooler. Check your local laws regarding window tint darkness before getting your windows tinted. Adding a roof rack can give your xB a more utilitarian and rugged look. Roof racks are perfect for carrying bikes, kayaks, and other outdoor gear. Thule and Yakima are well-known brands for roof racks. Another easy way to customize your xB is with custom lighting. Consider upgrading your headlights to HID or LED bulbs for improved visibility and a modern look. You can also add LED fog lights or accent lighting to make your xB stand out from the crowd. Companies like Oracle Lighting and Morimoto offer a wide range of custom lighting options. For a unique touch, consider adding a custom grille. A new grille can completely change the front-end appearance of your xB. Look for grilles made from mesh, billet aluminum, or carbon fiber. Remember to always choose high-quality exterior mods that are designed specifically for your 2004 Scion xB to ensure proper fitment and durability.

Interior Accessories

Alright, let's move inside and talk about interior accessories! Your 2004 Scion xB's interior is your personal sanctuary, so why not make it as comfortable and stylish as possible? There are tons of aftermarket accessories that can enhance your driving experience. Let's start with seat covers. Upgrading your seat covers can protect your factory seats from wear and tear while also adding a touch of style to your interior. Look for seat covers made from durable materials like neoprene, leatherette, or ballistic nylon. Brands like Coverking and Wet Okole offer great options for the xB. Another popular accessory is a steering wheel cover. A steering wheel cover can improve your grip and add a personal touch to your steering wheel. Consider a leather or suede steering wheel cover for a luxurious feel. Companies like Wheelskins and Sparco offer a wide range of steering wheel covers. Don't forget about floor mats. Upgrading your floor mats can protect your carpets from dirt and spills while also adding a touch of style to your interior. Look for floor mats made from durable materials like rubber or carpet. WeatherTech and Husky Liners offer excellent floor mats for the xB. Adding a shift knob can be a fun way to personalize your interior. Consider a weighted shift knob for improved shifting feel. Brands like Skunk2 and TWM Performance offer a variety of shift knobs. Another great accessory is a dash cam. A dash cam can record your driving footage, providing valuable evidence in the event of an accident. Consider a dash cam with features like loop recording, G-sensor, and night vision. Companies like BlackVue and Garmin offer a wide range of dash cams. For those who love music, consider upgrading your stereo system. A new head unit, speakers, and amplifier can dramatically improve your audio experience. Pioneer, Kenwood, and Alpine are well-known brands for car audio equipment. Remember to choose high-quality interior accessories that are designed to enhance your driving experience and reflect your personal style.

Where to Buy

So, where can you snag all these awesome aftermarket parts for your 2004 Scion xB? Luckily, there are plenty of options out there, both online and in brick-and-mortar stores. Online retailers like Amazon and eBay are great places to start. They offer a vast selection of parts at competitive prices. Just be sure to read reviews and check the seller's reputation before making a purchase. Another popular online retailer is CARiD. CARiD specializes in automotive parts and accessories and offers a wide range of products for the Scion xB. They also have helpful customer service representatives who can assist you with your purchase. For those who prefer to shop in person, local auto parts stores like AutoZone and Advance Auto Parts are good options. They may not have as wide of a selection as online retailers, but you can see the parts in person and get advice from the store employees. Don't forget about specialty shops. Many cities have specialty shops that cater to car enthusiasts. These shops often carry high-end parts and offer installation services. Ask around in local car clubs or online forums to find reputable specialty shops in your area. When buying aftermarket parts, it's always a good idea to compare prices from different retailers. Prices can vary significantly, so it's worth taking the time to shop around. Also, be sure to factor in shipping costs when comparing prices online. Finally, remember to read reviews before making a purchase. Reviews can provide valuable insights into the quality of the parts and the reputation of the retailer. By doing your research and shopping around, you can find the best deals on aftermarket parts for your 2004 Scion xB.

Conclusion

There you have it, folks! A comprehensive guide to aftermarket parts for your 2004 Scion xB. With the right upgrades, you can transform your boxy ride into a true reflection of your personality and style. Whether you're after performance gains, a killer look, or just some added comfort, the possibilities are endless. So go ahead, explore the world of aftermarket parts and make your Scion xB your own. Happy modding!