
The Story
This Bosch 40 amp JCASE cartridge fuse is the correct service fuse for Porsche electrical circuits that require this amperage and cartridge case style. It is built to protect higher-load circuits while maintaining the correct fit in JCASE fuse blocks and holders. Bosch has been a global leader in automotive technology since 1886, pioneering innovations like electronic fuel injection and oxygen (lambda) sensors that shaped modern engine management. Today, Bosch supplies OEM-quality sensors, engine electronics, ignition components, and braking parts found in vehicles worldwide. Known for precision engineering and reliable performance, Bosch parts are built to factory specifications for dependable fitment and long-term durability.
Technical Details
- Manufacturer part number: 1-987-529-059
- Fuse type: JCASE cartridge fuse
- Amperage rating: 40 amp
- Use case: service replacement for circuits designed for a 40 amp JCASE fuse
- Application note: Verify amperage and case style before installation
Fitment & Compatibility
Confirm compatibility using the manufacturer part number, amperage rating, and fuse type listed above.
If you would like help verifying fitment, contact us with your VIN and part number so we can confirm the correct application.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
This Bosch 40 amp JCASE cartridge fuse is the correct service fuse for Porsche electrical circuits that require this amperage and cartridge case style. It is built to protect higher-load circuits while maintaining the correct fit in JCASE fuse blocks and holders. Bosch has been a global leader in automotive technology since 1886, pioneering innovations like electronic fuel injection and oxygen (lambda) sensors that shaped modern engine management. Today, Bosch supplies OEM-quality sensors, engine electronics, ignition components, and braking parts found in vehicles worldwide. Known for precision engineering and reliable performance, Bosch parts are built to factory specifications for dependable fitment and long-term durability.
Technical Details
- Manufacturer part number: 1-987-529-059
- Fuse type: JCASE cartridge fuse
- Amperage rating: 40 amp
- Use case: service replacement for circuits designed for a 40 amp JCASE fuse
- Application note: Verify amperage and case style before installation
Fitment & Compatibility
Confirm compatibility using the manufacturer part number, amperage rating, and fuse type listed above.
If you would like help verifying fitment, contact us with your VIN and part number so we can confirm the correct application.











