Set of 8 Ignition Coil Packs & Spark Plugs for 2007-2011

In this review the reviewer examines a complete Set of 8 Ignition Coil Packs & Spark Plugs intended for late 2000s Cadillac and Buick V8 models. The bottom line is simple: this set is for owners who want a one-stop replacement for all eight cylinders, restoring reliable spark and engine smoothness without sourcing parts individually. It is especially valuable for DIY mechanics and technicians looking for a matched kit that lists OEM replacement numbers and broad fitment across DTS, SRX, STS, XLR and Lucerne models.

Key Features

• Complete kit: Includes both ignition coils and spark plugs so owners replace all eight firing units in one go, eliminating mismatch concerns.
• Direct fitment: Designed for V8 4.4L and 4.6L Cadillac and Buick engines from 2007-2011, which simplifies installation for the listed models.
• OEM cross references: Replaces several factory part numbers including 099700-0940 and UF543, helping users confirm compatibility with their existing parts.
• Durable materials: Built to meet or exceed OEM tolerance for corrosion resistance and high temperature operation, supporting long service life under normal driving conditions.
• Performance impact: Restores consistent spark delivery to improve engine efficiency, throttle response and potentially fuel economy after installation.

Who It's For

This kit suits owners of Cadillac DTS, SRX, STS, XLR and Buick Lucerne V8 models from the late 2000s who need a full ignition service. It is aimed at people comfortable with routine engine work who want the convenience of a matched set and the reassurance of OEM replacement numbers for cross checking.

Those who should look elsewhere are owners of non-listed model years or different engine types, or buyers who require branded OEM packaging and dealer-backed warranty coverage; in those cases an original equipment supplier or dealership part may be preferable.

Pros & Cons

Pros

• Full 8-unit kit removes the need to source coils and plugs separately, saving time.
• Multiple OEM replacement numbers provided, making fit confirmation straightforward.
• Customers report easy installation and immediate restoration of engine smoothness and responsiveness.
• Good value for money compared with buying each component individually.

Cons

• Quality feedback is mixed in some reports, so buyers sensitive to OEM-brand assurance may prefer dealer parts.

Specifications

Product type	Ignition coil packs and spark plugs set
Fitment	Cadillac DTS, SRX, STS, XLR and Buick Lucerne (2007-2011, V8 4.4L/4.6L)
Included units	8 ignition coils and 8 spark plugs (complete set)
Replaces	099700-0940, 12594176, 12597745, 12602862, UF543, GN10455
Brand	ZYFZZDS
Key benefits	Improved spark consistency, easier installation, corrosion resistance

Our Verdict

This matched set of 8 ignition coils and spark plugs is a practical, cost-effective option for owners of compatible Cadillac and Buick V8s who need a complete replacement. It offers clear fitment references and generally restores engine smoothness and efficiency, making it a sensible choice for DIY installers and independent shops seeking value over dealer-branded parts.

Frequently Asked Questions

Will this set fit my 2008 Cadillac DTS?
Yes, the kit lists direct fitment for DTS 2007-2011 with V8 4.6L engines; compare the OEM numbers to your existing parts to confirm.

Does the set include all parts needed for an eight-cylinder ignition service?
Yes, it includes both ignition coils and spark plugs for all eight cylinders so a full service can be completed with this single kit.

Are these OEM parts?
The set is an aftermarket replacement that lists multiple OEM cross reference numbers for compatibility; some buyers report mixed impressions of quality compared with dealer-brand parts.