Ignition Coil Boot – 058 905 447 C
Ignition Coil Boot for 1.8T 20V (058). OE number 058 905 447 C. Main group 905 sub-group 447. Revision index C. Replace boots whenever the coils are disturbed; they harden and crack with heat. Sub-group 447 is also a boot/connector.
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Technical specifications
| Part Number | 058 905 447 C |
| SKU | AUD-058905447C |
| Brand | |
| Category | Ignition Coils |
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Customer reviews
Verified feedback from Audi owners and independent workshops.
4.4
5 reviews
Yara Ellery
June 17, 2026
Straight fix for a rough idle
Went on my Q5 8R 1.8 TFSI at 94k miles. The spring contact is firm and seated with a definite click. Coil pack out, new one in, ten minutes with a T30 and the engine cover off. Result is it pulls cleanly through the rev range again with no stumble under load. Exactly what I needed.
Sofia Rahman
May 3, 2026
No more limp mode
Cross-referenced the OE number against my 2018 Q7 4M before ordering. The part number on the body matches the OE reference exactly. A smear of dielectric grease went on the boot before it was seated. Result is the rough idle and flashing engine light disappeared immediately. No complaints at all.
Patrick Petrov
September 5, 2025
Exactly like the originals
Went on my A3 8P 2.0 TDI at 87k miles. The boot is proper thick silicone, not the thin rubber the cheap ones use. I cleared the fault codes afterwards and they have not come back. Result is the rough idle and flashing engine light disappeared immediately. No complaints at all.
Jonas Rossi
August 1, 2025
Works fine, boots are stiff
Replacement for my 2015 S4 B8 3.0 TDI V6. I cleared the fault codes afterwards and they have not come back. The boot tore as I seated it, which suggests the rubber compound is not right. That said, it pulls cleanly through the rev range again with no stumble under load. Worth buying, just go in with your eyes open.
Yusuf Adeyemi
April 22, 2025
Misfire cleared instantly
Ordered this for my Q8 4M after the original gave up at 61k. Coil pack out, new one in, ten minutes with a T30 and the engine cover off. Identical moulding and connector to the failed original I took out. Result is fuel economy went back to normal within a tank.