Bosch 0221503027 Ignition Coil

Bosch Ignition Coil for OE-Style Performance

Bosch Ignition Coil (New) part number 0221503027 is built for direct replacement use on select Saturn and Cadillac applications. It delivers the correct ignition voltage, a long-lasting spark, and stable engine operation for vehicles that need reliable coil performance.

Key Features

• OE-quality Bosch ignition coil for consistent spark delivery
• 14-volt coil specification
• Pencil coil design for select distributorless ignition systems
• SAE terminal type for proper electrical connection
• Supports smoother engine running and reduced exhaust emissions
• Helps maintain fuel efficiency when the ignition system is operating correctly

Product Details

The Bosch 0221503027 ignition coil is part of Bosch’s Ignition Coil (New) line, a product line focused on replacement ignition components built to match original equipment requirements. This coil is engineered to provide the correct ignition voltage and a durable spark output, which helps support dependable combustion and steady drivability. It is a direct-fit ignition coil for select Saturn L300, Saturn LW300, Saturn Vue, Cadillac CTS, Cadillac Catera, Saturn LS2, and Saturn LW2 models.

This part cross-references 90584337 for the same application. If you are replacing a failing coil on a Saturn L300 or Cadillac CTS, Bosch 0221503027 offers a straightforward OE-style replacement path.

What It Helps Address

• Engine misfire caused by weak or inconsistent spark
• Hard starting related to ignition coil failure
• Rough idle and hesitation under acceleration
• Reduced fuel economy from incomplete combustion
• Increased tailpipe emissions from poor ignition performance

Installation Notes

Compatible With 2001-2005 Saturn L300, Left Side; 2003-2004 Cadillac CTS, Left Side; 2001-2003 Saturn LW300, Left Side; 2002-2003 Saturn Vue, Left Side; 1999-2001 Cadillac Catera, Left Side; 2000 Saturn LS2, Left Side; and 2000 Saturn LW2, Left Side. Verify the connector style, mounting location, and engine application before installation. Inspect related ignition components such as spark plugs and wiring for wear before replacing the coil. Bosch 0221503027 is a direct replacement part for the listed applications, including Saturn L300 and Cadillac CTS models.

Quality Assurance

Bosch ignition components are built to OE-level standards for ignition voltage control, spark consistency, and dependable engine operation. The Bosch 0221503027 is designed to meet the needs of the listed applications while supporting proper combustion and emissions performance.