Spectra C-840 Ignition Coil

Name: Spectra C-840 Ignition Coil
Brand: Spectra
SKU: BCNK-C-840
Price: 72.85 USD
Availability: InStock

⚙️ 26 vehicles fit this part

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✅OE Direct Replacement — Bolt-on fit, no modifications needed

🚗Fitment: Buick and Cadillac, DTS, Lucerne, SRX, STS, and XLR

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Reliable Ignition Coil for Buick and Cadillac Vehicles

The Spectra C-840 ignition coil is designed to provide consistent ignition performance for select Buick and Cadillac models. Engineered to meet OEM specifications, this ignition coil ensures proper spark delivery for efficient engine operation.

Compatible with Buick DTS and Lucerne models
Fits Cadillac SRX, STS, and XLR vehicles
Part number C-840 for precise identification
Delivers stable voltage for reliable ignition
Manufactured by Spectra for quality assurance

Product Details and Specifications

The Spectra C-840 ignition coil is a direct replacement part designed to restore ignition system functionality in compatible Buick and Cadillac vehicles. This ignition coil converts the battery's low voltage to the high voltage needed to create an electric spark in the spark plugs, which ignites the fuel-air mixture in the engine cylinders. The C-840 meets or exceeds OEM standards, ensuring proper fit and performance for the Buick DTS and Lucerne, as well as Cadillac SRX, STS, and XLR models. Using the correct ignition coil helps maintain engine efficiency and smooth operation.

Common Applications and Problem Resolution

Resolves engine misfires caused by faulty ignition coils
Improves rough idling and hesitation during acceleration
Addresses difficulty starting the engine
Eliminates check engine light codes related to ignition coil failure
Restores proper fuel combustion and engine power

Installation Notes and Tips

Installation of the Spectra C-840 ignition coil should be performed with the engine off and cooled down. Ensure the ignition coil connectors are clean and securely attached. It is recommended to inspect spark plugs and ignition wires during replacement to maintain optimal ignition system performance. Follow vehicle-specific service manual instructions for torque specifications and safety precautions.

Quality Assurance and Warranty Information

Manufactured by Spectra, the C-840 ignition coil undergoes quality control testing to meet industry standards. While specific warranty details are not provided, Spectra products typically come with a limited warranty against defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.

This part fits 26 vehicles. Search below:

Year	Make	Model	Liters	Cylinders	Position	Notes
2011	Buick	Lucerne	4.6L	V8	N/A	Directly mounts onto cylinder head.
2011	Cadillac	DTS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2010	Buick	Lucerne	4.6L	V8	N/A	Directly mounts onto cylinder head.
2010	Cadillac	DTS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2010	Cadillac	STS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2009	Buick	Lucerne	4.6L	V8	N/A	Directly mounts onto cylinder head.
2009	Cadillac	DTS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2009	Cadillac	SRX	4.6L	V8	N/A	Directly mounts onto cylinder head.
2009	Cadillac	STS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2009	Cadillac	STS	4.4L	V8	N/A	Directly mounts onto cylinder head.
2009	Cadillac	XLR	4.6L	V8	N/A	Directly mounts onto cylinder head.
2009	Cadillac	XLR	4.4L	V8	N/A	Directly mounts onto cylinder head.
2008	Buick	Lucerne	4.6L	V8	N/A	Directly mounts onto cylinder head.
2008	Cadillac	DTS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2008	Cadillac	SRX	4.6L	V8	N/A	Directly mounts onto cylinder head.
2008	Cadillac	STS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2008	Cadillac	STS	4.4L	V8	N/A	Directly mounts onto cylinder head.
2008	Cadillac	XLR	4.6L	V8	N/A	Directly mounts onto cylinder head.
2008	Cadillac	XLR	4.4L	V8	N/A	Directly mounts onto cylinder head.
2007	Buick	Lucerne	4.6L	V8	N/A	Directly mounts onto cylinder head.
2007	Cadillac	DTS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2007	Cadillac	SRX	4.6L	V8	N/A	Directly mounts onto cylinder head.
2007	Cadillac	STS	4.6L	V8	N/A	Directly mounts onto cylinder head.
2007	Cadillac	STS	4.4L	V8	N/A	Directly mounts onto cylinder head.
2007	Cadillac	XLR	4.6L	V8	N/A	Directly mounts onto cylinder head.
2007	Cadillac	XLR	4.4L	V8	N/A	Directly mounts onto cylinder head.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

12597745191135487205218575C16166737301C1559CLS1223CUF543D598AE1043E1043PGN10453IC623NCU5186UF543UF543T

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.