Thread Repair Kits

HeliCoil Metric Fine Thread Repair Kit, M12x1.25

$184.05$258.18save 29% vs MSRP· Kit: 6 inserts, tap, installation tool

Part no. HC-HEL5543-12 · HeliCoil part no. HEL5543-12 · price in CAD

Special order — not on our shelf. Order it and we bring it in, then call you with timing. Shipping AB/SK/MB $30 · ON/QC $40 · NT $50 (base FREE over $150).

100% genuine. 100% genuine HeliCoil, from authorized North American distribution.

A thread repair kit for stripped, worn or damaged M12x1.25 metric fine threads, so the original-size fastener can be reused. The carded kit holds 6 stainless steel inserts (18.0 mm long), the matching HeliCoil tap (4944-12) and an installation tool (4640-12). A 31/64 in drill is needed and is not included.

✓Restores stripped, worn or damaged threads to their original size, so the original-size fastener can be reused
✓Inserts are precision-formed coils of hard 18-8 stainless steel diamond-shaped wire
✓Works in almost any part material, including aluminum, magnesium, cast iron and bronze
✓After installation each coil expands against the tapped hole and anchors permanently
✓Insert has a notched driving tang for installation and easy removal
✓Repaired thread resists thread wear, corrosion, galling, seizing and rust

Size

30-day returns · Secure Stripe checkout · 100% genuine · (780) 482-2424

⚠ Safety warnings

Drill out the damaged threads with the drill size given on the kit (31/64 in), deep enough for the insert length and the bolt or screw used
Use the HeliCoil tap supplied in the kit and check the size on its shank; tap deep enough for the insert length and the bolt or screw used
Wind the insert in with the supplied installation tool until the top coil is 1/4 - 1/2 turn into the tapped thread
Remove the tang so the bolt can pass fully through the insert: put the square (unchamfered) end of a punch on the tang and strike sharply

Specifications & Approvals

THREAD SIZE + LENGTH: M12x1.25 x 18.0mm, KIT PART NO.: 5543-12, KIT PKG. TYPE: A (A - Carded), INSERTS PER KIT: 6, TAP PART NO.: 4944-12, INSTALLATION TOOL PART NO.: 4640-12, TOOL TYPE: 3, PACKAGED INSERT PART NO.: R4649-12, PACKAGED INSERT QTY.: 6, DRILL SIZE: 31/64, Insert material (maker catalog): extremely hard stainless steel (18-8) diamond- shaped wire, 304 Stainless Steel inserts (SEF HC-2000 catalog): Material Spec: AS7245; Temperature range: up to 800°F; Tensile: 200,000 – 250,000 PSI; Hardness: RHc 43-50; Corrosion resistance: Moderate

Common questions

Is this genuine HeliCoil Metric Fine Thread Repair Kit, M12x1.25?

Yes. 100% genuine HeliCoil, from authorized North American distribution. Everything we sell is genuine product — never grey-market.

Can I get it shipped or pick it up in Edmonton?

Both. Choose ship-to-me for delivery (AB/SK/MB $30 · ON/QC $40 · NT $50, base rate free over $150), or select pickup at checkout and collect it at our Edmonton shop.

Not sure this is the right thread repair kits for your vehicle?

Check your owner's manual for the required specification or call our Edmonton team at (780) 482-2424 and we'll match the right product to your vehicle.