Related Products
Details
- Brand:
- SKU:
W80579
- Description:
Analog flex‑drive compression tester used to measure cylinder pressure on gasoline engines. Features a 0–300 PSI gauge, 11-inch flexible rubber hose, air-hold valve, and gauge reset button. Threads into 14 mm and 18 mm spark plug holes. UPC: 039564805790.
- Condition: New
- Warranty:
Flex Drive Compression Tester (0–300 PSI) – Professional Engine Testing Tool Kit - Performance Tool (W80579)
- Sale Price: $25.89
Pricing is valid online only and may vary in your local store
Vehicle Fitment
Interchange
Policies
Policies
Product Reviews
Brand
Store
aftermarket
AutoNation Aftermarket Parts FAQ & Buying Guide | AutoNation Parts
What is the AutoNation Aftermarket Store?
The AutoNation Aftermarket Store is your trusted source for high-quality aftermarket auto parts and accessories. We offer over 275+ leading brands, delivering reliable components for nearly every make and model on the road today.
What types of aftermarket parts do you offer?
Our inventory includes everything from performance upgrades to essential replacement parts such as brakes, filters, suspension components, lighting, and electronics. Whether you're maintaining or upgrading your vehicle, we have you covered.
How do I find the right part for my vehicle?
Use our Search by Vehicle tool to quickly match parts to your exact make, model, and year. This ensures proper fitment and optimal performance.
Are aftermarket parts reliable?
Yes. We carefully curate our catalog with trusted aftermarket brands known for durability and performance. Many aftermarket parts meet or exceed OEM standards while offering better value.
How fast is shipping?
We offer fast and reliable delivery nationwide. Most orders are processed quickly so you can get back on the road without delays.
Do you offer discounts on aftermarket parts?
Yes. Combine essential maintenance items and apply promo code MAINT5SAVE at checkout when your order reaches $75+ to save on your purchase.
Can I install these parts myself?
Many of our products are perfect for DIY enthusiasts, while others may require professional installation. Always review product details and consult a technician if needed.
What if I order the wrong part?
If a part doesn’t fit, you can review our Returns Policy for easy return or exchange options. We recommend verifying compatibility before purchase.
Why shop with AutoNation Aftermarket?
AutoNation is one of America’s most trusted automotive retailers, with 300+ locations nationwide. We combine competitive pricing, quality assurance, and expert selection to deliver unmatched value.
Do aftermarket parts affect vehicle performance?
High-quality aftermarket parts can enhance performance, efficiency, and durability. Choosing the right components ensures your vehicle operates at its best.
Key Product Information
Additional Information
| FITMENT | Universal tool for checking cylinder compression on most gasoline engines via 14 mm and 18 mm spark plug threads. For smaller plug sizes (10 mm, 12 mm, and 16 mm Ford), use the compatible adapter set W80577. Not intended for diesel engines; use a dedicated diesel compression tester. Universal N/A (N/A): Most gasoline engines with 14 mm or 18 mm spark plug threads |
| SYMPTOM | Use a compression tester when diagnosing misfires (e.g., P0300–P030x), rough idle, loss of power, hard starting, or suspected mechanical engine wear. |
| TROUBLESHOOTING | Compare all cylinder readings—highest to lowest should be within about 15%. If a low cylinder improves markedly after adding a small amount of oil, piston rings may be worn; if not, suspect valves. A pair of adjacent low cylinders may indicate a head‑gasket issue. Readings below ~100 PSI generally indicate a mechanically unsound cylinder. |
| INSTALLATION | Disable fuel and ignition per the vehicle manual (e.g., remove fuel pump fuse and disconnect ignition), remove all spark plugs, thread the tester’s 14 mm or 18 mm adapter by hand until the O‑ring seals (do not use a wrench), crank the engine 5–6 revolutions, record and reset the gauge between cylinders. |
| MAINTENANCE | |
| GENERAL NOTES | Includes 0–300 PSI gauge, air-hold valve, and gauge reset button; 11 in. flexible hose helps access tight plug wells. For small-plug applications, adapter kit W80577 adds 10 mm, 12 mm, and 16 mm (Ford) options and fits this tester. Follow all safety warnings in the included instructions. |
| FAULT CODES | |
| REPLACEMENT | |
| WEIGHT | 0.80 lb |
| DIMENSIONS | 5.2 x 1.6 x 11.9 inches |