Energy Suspension Ball Joint Boot S2000 Part Number: Complete Guide

If you own a Honda S2000 and need to replace worn ball joint boots, Energy Suspension offers a high-quality polyurethane replacement. This guide provides the correct part number, explains compatibility, and offers practical advice for installation. Whether you are restoring suspension components or performing routine maintenance, knowing the right part number saves time and prevents fitment issues.

Correct Energy Suspension Part Number for S2000 Ball Joint Boots

The Energy Suspension ball joint boot that fits the Honda S2000 is part number 9.13102. This boot is designed for the front lower ball joints on the S2000 (model years 2000-2009). It is a universal boot with a tapered design that fits many Honda and Acura vehicles, but the S2000 specifically uses this boot for the front lower control arm ball joints.

Why this part number? Energy Suspension's 9.13102 is made from their signature red polyurethane material, which is more durable than factory rubber boots. It resists tearing, cracking, and ozone damage, providing a longer service life. The boot includes a metal retaining ring and a grease fitting adapter, though the S2000 ball joints typically do not have a grease fitting – the boot is simply a dust seal.

Compatibility and Fitment Details

Which S2000 Years and Positions Does It Fit?

• Honda S2000: 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
• Location: Front lower ball joints only. The rear suspension on the S2000 uses different ball joints and boots.
• Quantity Needed: Two boots per car (one for each front lower ball joint).

How to Verify Fitment

Before purchasing, measure the ball joint stud diameter and boot seating area. The Energy Suspension 9.13102 boot has an inside diameter of approximately 0.5 inches at the small end and 0.8 inches at the large end. It fits ball joints with a stud diameter of 10-12mm and a mounting flange diameter of 20-22mm. The S2000 front lower ball joint meets these dimensions.

If you have aftermarket ball joints (e.g., from Hardrace or Moog), double-check that the boot will seat properly. Some aftermarket joints have slightly larger or smaller flanges. In that case, measure before ordering.

Installation Guide for Energy Suspension Ball Joint Boots on the S2000

Replacing ball joint boots on the S2000 is a straightforward job if you have basic mechanical skills. Here are the steps:

Tools Needed

• Scissors or a razor blade (to remove old boot)
• Small flathead screwdriver (to pop off old retaining ring)
• Hammer and a socket or bearing driver (to press the new boot on)
• Brake cleaner or degreaser (to clean the ball joint)
• Grease (if the ball joint is serviceable; S2000 factory ball joints are sealed)
• C-clamp or ball joint press (optional, but can make installation easier)

Step-by-Step

1. Jack up the front of the car and remove the front wheels. Place jack stands under the frame.
2. Remove the old boot. Pry off the metal retaining ring with a screwdriver. Cut the old rubber boot with scissors and slide it off the ball joint stud.
3. Clean the ball joint. Use brake cleaner and a rag to remove all old grease, dirt, and debris from the stud and the housing.
4. Inspect the ball joint. Check for excessive play, rust, or damage. If the ball joint is worn, replace the entire joint. Boots are only effective if the joint is still tight.
5. Apply grease (optional). If your ball joint has a grease fitting, pack the boot with grease before installing. For sealed units, a small amount of grease inside the boot helps reduce friction.
6. Install the new boot. Slide the boot over the ball joint stud. Use a socket that matches the boot's large diameter and tap it into place with a hammer until the boot seats fully on the housing. Ensure the small end of the boot is flush against the stud.
7. Install the retaining ring. The Energy Suspension boot comes with a metal ring. Position it in the groove on the boot and press it down using a flathead screwdriver or a specialized tool. The ring should snap into place securely.
8. Repeat for the other side.
9. Reinstall wheels and lower the car.

Tip: If the boot feels too tight or too loose, apply a thin layer of dish soap or silicone lubricant to the ball joint stud to help it slide. Do not use petroleum grease as it can degrade polyurethane over time.

Alternatives to Energy Suspension 9.13102

While the Energy Suspension boot is a popular choice, there are other options on the market:

• Moog K80431 – A rubber boot that is close to OEM. It is cheaper but less durable than polyurethane.
• OEM Honda Part # 43305-S84-A01 – Factory replacement boot. Reliable but expensive and may crack sooner than polyurethane.
• Spicer 3-13102 – Similar universal polyurethane boot, often cheaper but may not fit as precisely.

If you prefer the longevity of polyurethane, Energy Suspension 9.13102 is the best balance of cost and durability. If you want a perfect OEM fit and are not concerned with future cracking, go with OEM.

Practical Recommendations

For most S2000 owners, replacing ball joint boots is a preventative measure to extend the life of the front suspension. The Energy Suspension 9.13102 is an excellent upgrade over factory rubber. Here is a quick summary:

• Part number: 9.13102
• Quantity: 2 (one per front lower ball joint)
• Material: Red polyurethane (also available in black, but red is standard)
• Expected lifespan: 5-7 years or 50,000-70,000 miles, depending on driving conditions

If you are already replacing control arms or ball joints, you may get new boots with those parts. But for a simple boot swap, the Energy Suspension kit is a cost-effective solution that does not require removing the ball joint. Just be careful not to damage the new boot during installation.

Final Recommendation

Buy Energy Suspension 9.13102 from an auto parts retailer that specializes in suspension components. Confirm the part number with the seller before ordering. If you have any doubts about fitment, measure your ball joint first. Once installed, check the boots periodically for tears and replace as needed. This small upgrade will keep your S2000's front end tight and protected from dirt and moisture.