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Top 21 Aftermarket Upgrades for Your ’88-’98 Chevy/GMC OBS Truck

Chris Hamilton . December 30, 2024 . Cadillac
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Add These 21 Hot New Products to Your Wish List

From climate control systems and shaved door kits to transmission upgrades and big brake kits, there have never been more products available to build a customized ’88-’98 OBS full-size pickup or SUV than there is today.

Check out this hand-picked selection of aftermarket parts compiled by the editors at Motortopia.com. We’re certain you’ll find something you need for your build!

Wilwood AERO4 Big Brake Rear Axle Kits

Wilwood’s AERO4 Big Brake Rear Axle Kits upgrade the factory disc brakes while retaining the OE parking brake assembly for ’88-’98 Chevy trucks. These kits feature AERO4 radial mount calipers, high-friction BP compound pads, and oversized 14-inch rotors, providing superior braking performance and durability to complement big wheel, tire, and suspension upgrades.

Wilwood
805-388-1188
www.wilwood.com

Vintage Air SureFit Climate Control System

Vintage Air introduces its new bolt-in SureFit climate control system for 1988-’94 GM C10 trucks, featuring the advanced Gen 5 Super Magnum Max module with OEM-quality injection-molded cases and blend air doors. This system, which includes a factory-style LED backlit control panel, is designed to bolt into the OEM location with minimal modifications and is available as a complete kit or an evaporator kit for interior components.

Vintage Air
800-862-6658
www.vintageair.com

Tuff Stuff Max Amp Alternator

Upgrade your classic GM truck’s power system with a Tuff Stuff Max Amp alternator, delivering up to 165 amps at idle and 225 amps at full charge to handle high-demand electronics. Built in the USA, these alternators fit 1963-’94 GM vehicles and are available in chrome, black powdercoat, or clear powdercoat finishes, with direct replacement cases for factory alternators and options for OEM-style or one-wire hookups.

Summit Racing Equipment
800-230-3030
www.summitracing.com

1988-’98 Faux Metal Mild Tubz

The 1988-’98 Faux Metal Mild Tubz are perfect for static drop or mild air-bagged Chevy trucks, adding about 3 inches in height and 2-3 inches in width for extra clearance. Designed to fit around factory components like the AC dryer, wiring harness, and master cylinder, these Tubz come with trim patterns and a bolt kit, making installation a breeze while accommodating various tire and drop setups.

Slosh Tubz
479-599-9664
www.sloshtubz.net

’88-’98 GM Truck Shaved Door Kit

Upgrade your ’88-’98 GM truck with the AVS shaved door kit, featuring bolt-in brackets that require no modifications. This kit includes high-powered, quiet actuators, a pre-wired relay harness, an 8-channel remote system, strong door pusher coils, and a unique backup entry system, ensuring a seamless and reliable installation without the need for future adjustments.

AVS
559-486-5444
www.avsontheweb.com

Flaming River Power Rack-and-Pinion Cradle Kit

Upgrade your 1988-’98 Chevy/GMC C1500’s steering with the Flaming River power rack-and-pinion cradle kit, replacing the factory steering box, idler arm, and drag link for more precise and lightweight steering. This kit features a robust .980-inch shaft, billet servo valve, and solid 3/8-inch plate steel construction, and it connects seamlessly to the OEM column assembly without any cutting, drilling, or welding required.

Summit Racing Equipment
800-230-3030
www.summitracing.com

Flatline Barriers Insulation Kits

Flatline Barriers insulation kits are the ultimate solution for sound and thermal control in your classic car or truck. Using advanced technology and materials, these lightweight, pre-cut kits effectively reduce unwanted noise and heat, making installation a breeze while providing top-notch insulation performance.

Classic Industries
800-854-1280
www.classicindustries.com

Reproduction Instrument Cluster Lens

Upgrade your 1988-’91 Chevy or GMC pickup with a new reproduction instrument cluster lens for models with Rally Gauges (production code Z53). Made from high-quality injection-molded UV acrylic, this lens is an authentic replacement for your scratched, cracked, or hazy original, ensuring a clear view of your gauges.

Classic Industries
800-854-1280
www.classicindustries.com

American Powertrain Transmission Kits

American Powertrain provides complete turnkey 5- and 6-speed transmission kits for ’88-’98 Chevy OBS trucks, featuring Tremec transmissions. These kits include everything needed for a bolt-in TKX 5-speed or Magnum 6-speed conversion, such as bell housing, clutch, flywheel, crossmember, hydraulic clutch conversion, and driveshaft, along with a heavy-duty 2WD towing option featuring the TR-4050 5-speed.

American Powertrain
931-646-4836
www.americanpowertrain.com

’88-’98 OBS GM Truck Hood Hinges

Upgrade your Chevy/GM OBS 1988-1998 truck’s engine bay with these billet hood hinges, crafted from durable 6061-T6 aluminum for durability and smooth operation. Featuring large bearings, stainless steel gas struts, and stainless steel hardware, these hinges are available in machined, polished, or black anodized finishes. Made in the USA and sold in pairs, they fit ’88-’98 C/K Chevy/GMC Trucks, ’92-’99 Blazer/Jimmy/Suburban/Tahoe Yukon models, enhancing both function and style in your ride.

All American Billet
623-580-7214
www.allamericanbillet.com

’88-’98 GM OBS Truck Door Jamb Vents

Enhance the door jambs of your ’88-’98 GM OBS truck with All American Billet door jamb vents. Crafted from durable 6061-T6 aluminum, these vents are built to last and add a touch of style to your ride. Available finishes include machined, polished, or silverline and sold in pairs, these vents are the perfect upgrade for your truck’s aesthetic.

All American Billet
623-580-7214
www.allamericanbillet.com

Ridler 652 Wheels

Experience a modern interpretation of the classic Magnum 500 design with the Ridler 652 wheel. Available in staggered fitments from 17 to 20 inches, these wheels are crafted using advanced flow-formed technology for lightweight durability. Featuring a diamond-cut face and lip with enlarged windows, the Ridler 652 provides a striking view of your aftermarket brake calipers, making it the perfect blend of classic style and contemporary performance.

Ridler Wheels
www.ridlerwheel.com

UC143 Scottsdale Wheels

Introducing the UC143 Scottsdale, a cast one-piece version inspired by the popular forged two-piece Scottsdale wheel from US Mags. Available in staggered 20- and 22-inch sizes with both 5-lug and 6-lug configurations, these wheels combine affordability with immediate availability. Each wheel includes an OE-inspired US Mags branded cap and is compatible with factory GM center caps, offering a stylish and versatile option for your vehicle.

US Mags
www.us-mags.com

UC144 OBS Wheels

Revitalize the classic Chevy 454SS wheel with the UC144 OBS from US Mags, now available in modern staggered sizes of 20 and 22 inches for OBS trucks. This reimagined design retains the iconic look while accommodating aftermarket brake and tire upgrades. Featuring compatibility with OE center caps and lug nuts, along with a US Mags branded cap included, the UC144 OBS offers both style and practicality for enthusiasts looking to enhance their truck’s appearance.

US Mags
www.us-mags.com

NVU Gauge Packages for OBS GM Trucks

Upgrade your OBS GM truck’s interior with NVU gauge packages, which are perfect for enhancing both style and functionality. With a variety of styles to choose from, these kits install seamlessly in the factory location using stock mountings and can reuse the factory lens carrier for a polished finish. Each kit includes a bracket for installing any NVU 6-gauge set with a 4-⅜-inch speedometer and tachometer.

All NVU OBS kits feature NVU’s exclusive Phoenix Direct Drive system, simplifying installation with built-in indicators, performance timers, shift warnings, and more. Choose NVU to bring your truck’s interior up to par with the rest of your custom build.

New Vintage USA
248-850-5482
www.newvintageusa.com

Exhaust Insulating Wrap Kit

Achieve a professional installation with Thermo Tec’s  exhaust insulating wrap with ease using its all-inclusive kits. Each package includes exhaust insulating wrap, high-heat coating, and snap strap, available in black or original. Two sizes are available: one tailored for motorcycles and 4-cylinder engines, and another suited for 6-8 cylinder applications.

Thermo Tec
800-274-8437
www.thermotec.com

’88-’94 Molded Power Door Panels

Upgrade your 1988-’94 Chevy truck with TMI’s molded power doorpanels, crafted from durable molded fiberglass and wrapped in vinyl for a sleek look. These panels come equipped with built-in armrests for added comfort and functionality.

TMI Products
888-460-0640
www.tmiproducts.com

Direct-Fit LS Swap Wiring Harness

Current Performance’s Direct-Fit custom wiring harnesses are meticulously crafted to order, providing a true plug-and-play solution tailored specifically for your project using ’97-up LSx or Vortec small-block engines. Designed from scratch to integrate seamlessly with your engine and vehicle combination, these harnesses enable retention of all factory vehicle functions, including gauges, ABS, and cruise control during engine swaps.

Current Performance
727-844-7570
www.currentperformance.com

’88-’94 Dash Panel from Classic Dash

Upgrade your 1988-’94 Chevy or GMC truck with the complete package from Classic Dash, designed to enhance your dashboard with modern functionality and style. It includes: gauge wiring harness, oil pressure and water temperature sending units, turn signal, high beam, and parking brake indicator (LED) kit, 3-⅜-inch speedometer, 3-⅜-inch tachometer, 2-1/16-inch fuel level gauge, 2-1/16-inch oil pressure gauge, 2-1/16-inch water temperature gauge, and 2-1/16-inch volt gauge.

Classic Dash
775-883-7904

’88-’98 EFI Tank with In-tank Pump

Upgrade your 1988-1998 OBS truck with this EFI Tank featuring the Aeromotive 41001 in-tank EFI assembly equipped with a powerful 340 pump. The tank includes a plate with a threaded fitting for a -6 ORB fitting (9/16-18 O-Ring), ensuring optimal fuel delivery. Designed to mount beneath the frame rail without removing the X-shaped rear crossmember, installation is straightforward with minor modifications required for mounting tabs to clear frame rivets and bed mounting holes. For trucks where the crossmember has been removed for suspension upgrades, the tank can also be top-mounted with additional bed floor fabrication needed for a custom fit.

Boyd Welding
www.fueltankparts.com

Belltech Complete Lowering Kits

Belltech offers complete lowering kits designed to lower your sport truck or SUV effectively and safely the first time. Engineered by Belltech’s experts, these kits include all necessary parts for achieving your desired stance while ensuring optimal alignment, performance, and safety. Backed by warranties ranging from limited lifetime coverage on lowering components and Street Performance Plus coilovers to two-year warranties on shocks and struts, Belltech complete lowering kits provide peace of mind and a comprehensive solution for your lowering needs.

Belltech Suspension
800-445-3767
www.belltech.com


 

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