Oem And Aftermarket Rear Spoiler Options For The 240sx Coupe

So, you're looking to spice up the rear end of your 240SX coupe with a spoiler? Excellent choice! The right spoiler can not only enhance the aesthetics but also potentially improve aerodynamics. Now, when it comes to spoiler options, you generally have two main avenues to explore: Original Equipment Manufacturer (OEM) and Aftermarket. Let's break down the pros, cons, and technical considerations for each.

OEM Rear Spoiler Options

OEM spoilers are those that were originally offered by Nissan for the 240SX coupe. These offer a perfect fit and finish, designed specifically for the car's body lines. They're generally more subtle in design compared to some aftermarket options, prioritizing a clean, integrated look.

Types of OEM Spoilers:

Base Model Spoiler: The most common and understated option. It's a relatively small, lip-style spoiler that sits flush against the trunk lid. Often made of ABS plastic. Finding one of these in good condition can be challenging, as they can become brittle with age and sun exposure.
SE/LE Spoiler (Three-Piece): This is a more aggressive option than the base model spoiler. It consists of a main wing section that mounts to the trunk and two smaller end caps. This is the most sought-after OEM spoiler, and thus commands the highest prices.
Optional Dealer-Installed Spoilers: Some Nissan dealerships offered optional spoilers at the time of purchase. These could vary depending on the region and the dealer, but were typically sourced from established aftermarket manufacturers but badged and marketed as OEM options. These are rarer and harder to identify definitively.

Pros of OEM Spoilers:

Perfect Fitment: Since they're designed specifically for the 240SX, you can expect excellent fitment with minimal gaps or alignment issues. No drilling new holes is usually required if you have the original trunk (more on that later).
Original Aesthetics: If you're aiming for a period-correct or restored look, OEM spoilers are the way to go. They maintain the car's original design intent.
Resale Value: In some cases, adding or retaining OEM parts can increase the car's resale value, particularly if it's a well-maintained example.

Cons of OEM Spoilers:

Availability and Cost: OEM spoilers, especially the SE/LE three-piece version, are becoming increasingly rare and expensive. Expect to pay a premium, especially for ones in good condition. Finding them unrestored in good condition is rare.
Condition: Due to their age, many OEM spoilers are cracked, faded, or damaged. Restoration may be required, adding to the overall cost. UV degradation is a common issue with plastic spoilers, causing them to become brittle and prone to cracking.
Limited Style Options: Your styling choices are limited to the original designs offered by Nissan. If you're looking for something more unique or aggressive, aftermarket might be a better bet.
Mounting Issues: Assuming you're getting a spoiler from another 240SX, you might be dealing with holes already drilled in the trunk, as well as potential rust around those holes. Careful surface preparation and rust treatment are crucial before installing any spoiler.

Technical Considerations for OEM Spoilers:

Mounting Hardware: Ensure you have all the necessary mounting hardware, including bolts, washers, and any specific clips or brackets. Refer to a factory service manual (FSM) for exploded diagrams and part numbers.
Trunk Lid Compatibility: Verify that the spoiler you're purchasing is compatible with your specific trunk lid. While most 240SX coupes have similar trunk lids, subtle variations may exist. If you are installing an SE/LE (three-piece spoiler) you will have to drill holes in the trunk to mount the spoiler securely.
Proper Sealing: Use appropriate sealant (e.g., polyurethane-based sealant) around the mounting holes to prevent water from entering the trunk. Water intrusion can lead to rust and corrosion.

Aftermarket Rear Spoiler Options

Aftermarket spoilers offer a much wider range of styles, materials, and price points. They cater to various tastes and performance goals, from subtle lip spoilers to aggressive wings designed for track use.

Types of Aftermarket Spoilers:

Lip Spoilers: Similar to the base model OEM spoiler, these are subtle and often made of ABS plastic, fiberglass, or carbon fiber.
Wing Spoilers: Larger and more aggressive than lip spoilers. Often feature adjustable elements for fine-tuning downforce.
Ducktail Spoilers: These have a distinctive upturned shape reminiscent of a duck's tail.
Universal Spoilers: These are designed to fit a wide range of vehicles and may require modification for proper fitment on a 240SX. Proceed with caution; fitment can be challenging.

Pros of Aftermarket Spoilers:

Wide Variety of Styles: You can find a spoiler to match virtually any aesthetic preference.
Affordability: Aftermarket spoilers often offer a more budget-friendly option compared to rare OEM parts.
Material Options: Choose from various materials like ABS plastic, fiberglass, carbon fiber, and polyurethane, each with its own properties in terms of weight, durability, and cost.
Performance Potential: Some aftermarket spoilers are designed with aerodynamics in mind and can potentially improve handling at higher speeds. Look for reputable manufacturers who provide wind tunnel testing data.

Cons of Aftermarket Spoilers:

Fitment Issues: Fitment can be inconsistent with aftermarket spoilers, particularly with cheaper or poorly made options. Read reviews and choose reputable brands. Poor fitment leads to rattles, wind noise and eventual damage to paintwork.
Quality Concerns: The quality of materials and construction can vary widely. Look for spoilers made from durable materials with a smooth, even finish.
Installation Challenges: Installation may require drilling new holes, modifying the trunk lid, or fabricating custom brackets.
Aesthetic Compatibility: An overly aggressive spoiler can look out of place on a stock or mildly modified 240SX. Choose a style that complements the overall design of the car.

Technical Considerations for Aftermarket Spoilers:

Material Selection: Consider the properties of different materials. ABS plastic is affordable and relatively durable, while fiberglass is lightweight but more prone to cracking. Carbon fiber is strong and lightweight but can be expensive. Polyurethane is flexible and resistant to impacts.
Aerodynamics: If you're concerned about performance, research the aerodynamic properties of the spoiler. Look for spoilers that have been wind tunnel tested or CFD (Computational Fluid Dynamics) analyzed. Understand that most spoilers at street speeds produce more visual benefit than actual downforce.
Mounting Method: Spoilers are typically mounted using bolts, adhesive, or a combination of both. Bolt-on mounting is generally more secure, but requires drilling. Adhesive mounting is easier but may not be as strong. Always follow the manufacturer's instructions carefully.
Trunk Lid Reinforcement: Larger wing spoilers can generate significant downforce, which can potentially damage the trunk lid. Consider reinforcing the trunk lid with additional bracing to prevent flexing or cracking. Over time this can damage the hinges and trunk latch.
Paint Matching: If you want the spoiler to match the color of your car, you'll need to have it professionally painted. Ensure the painter uses high-quality automotive paint and clear coat.
Corrosion Prevention: When drilling holes for mounting, treat the bare metal with rust preventative primer or paint to prevent corrosion.
Proper Alignment: Take your time to ensure the spoiler is properly aligned before drilling any holes or applying adhesive. Use masking tape to mark the desired position and check the alignment from multiple angles.
Surface Preparation: If you're using adhesive, thoroughly clean and degrease the trunk lid surface to ensure proper adhesion.

Ultimately, the best rear spoiler for your 240SX coupe depends on your budget, aesthetic preferences, and performance goals. Whether you choose an OEM spoiler for its perfect fit and original styling or an aftermarket option for its wider variety and affordability, careful research, proper installation, and attention to detail are key to achieving a satisfying result. Remember to consult with other 240SX owners and online forums for valuable insights and recommendations. Good luck with your spoiler project!