ST Suspensions Lowering Springs Kit for BMW 3 Series E46 Coupe 330Cd Diesel (2003-2004) – 40mm Front / 30mm Rear Drop – Sport Coil Spring Set, Performance Suspension Upgrade – Fits Chassis 346L/346C/346R/346K

ST Performance Coil Springs for BMW 3 Series E46 Coupe 330Cd 2003 to 2004

Transform the stance and handling of your BMW with this ST performance coil spring upgrade, tailored for the E46 3 Series coupe 330Cd from 05/2003 to 12/2004, chassis codes 346L, 346C, 346R, 346K. Expect a purposeful ride height drop and a sharper, more connected drive while retaining your factory shock absorbers.

Ideal for drivers who want a cleaner look, improved cornering and confidence on British roads, these sport springs deliver a tasteful front-rear rake and a responsive feel without the harshness of extreme setups.

Key specs and fitment

• Approximate drop: front 40 mm, rear 30 mm
• Engine output compatibility: up to 150 kW
• Maximum front axle load: 1030 kg
• Maximum rear axle load: 1100 kg
• Body style and years: BMW 3 Series E46 coupe 330Cd, 05/2003 to 12/2004
• Chassis references: 346L, 346C, 346R, 346K

Why choose this upgrade

• Sporty, even ride height with a proper road-focused drop for improved presence and stance
• OEM-grade construction with vehicle-specific spring rates for balanced comfort and control
• Chrome-silicon steel, multi-tempered for durability and consistent performance
• Epoxy coated for excellent corrosion resistance in UK conditions
• Compatible with factory electronic damping where fitted and works with standard shocks
• Sleeved in key areas for reduced noise and long-term reliability

Real-world results

We have installed these on customer cars and on our own builds. Feedback is consistently positive: tighter turn-in, reduced body roll and a clean, level aesthetic that complements the E46 coupe lines. It is a quality suspension upgrade for fast road use and daily driving alike.

Perfect for searchers looking for

BMW E46 suspension upgrade, 330Cd sport springs, coil spring set for 3 Series coupe, ride height reduction 40 mm 30 mm, drop springs for BMW diesel coupe, performance suspension for E46, front and rear lowering springs, handling upgrade for BMW 3 Series, stance improvement for E46 330Cd.

Good to know before you buy

• Check your VIN plate or manual to confirm axle loads match the figures above
• Wheel alignment is recommended after lowering for best tyre wear and handling
• Designed to work with standard dampers and suitable for vehicles with adaptive shocks

Professional fitting

Need installation We offer fitting at MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and availability.

Upgrade your BMW’s look and feel with this proven ST spring kit. Order now for a confident, road-ready drop and a rewarding drive every time.