Repair kits

NIGRIN 74074 tire sealant, 500 ml

The no-tools option: a canister that seals a small tread puncture and gets you moving, with both limits stated on the label.

NIGRIN 74074 tire sealant, 500 ml

The no-tools option: a canister that seals a small tread puncture and gets you moving, with both limits stated on the label.

Volume: 500 ml, stated
Puncture size: Holes up to 3 mm (0.12 in) in diameter, stated
Coverage: One tubeless car tire up to 41 cm (16.1 in), stated
Tools: None required, stated
Amazon reference: B001B4VCA6
EAN: 4008153740749

States both limits — 3 mm (0.12 in) and one tire — rather than implying it fixes anything
No tools and no jacking: it works at the roadside in the rain
A sealant is a temporary measure and the tire still has to be inspected

Best for: A boot canister for a small tread puncture, where a plug kit is too much work.

≈ $41

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Specifications

Volume: 500 ml, stated
Puncture size: Holes up to 3 mm (0.12 in) in diameter, stated
Coverage: One tubeless car tire up to 41 cm (16.1 in), stated
Tools: None required, stated
Amazon reference: B001B4VCA6
EAN: 4008153740749

What lands on the bench

A 500 ml tire sealant canister for tubeless car tires, stated for punctures up to 3 mm (0.12 in) and for a single tire up to 41 cm (16.1 in).

Why the stated limits are the review

Three millimeters and one tire. Sealant works within a narrow envelope, and a maker who prints the envelope is telling you when to reach for something else — a plug kit, or a phone.

What it does not do

Repair. It seals, temporarily, so the tire holds pressure long enough to reach a fitter. The tire still has to be inspected from the inside, and a fitter should be told sealant was used.

The unstated question

TPMS compatibility. It is not on this listing, which is a reason to mention the sealant when the wheel is next off.

Availability

On sale at around $41 on the American Amazon store at the time of checking.

Prices and availability are what Keepa reported on the date this page was updated; both move.

Prices quoted in this text were read on 4 September 2026. The live price is at the top of the page.

The questions that reach us

Does sealant damage TPMS sensors?

Some formulations do, and makers that are compatible say so explicitly. This listing does not state it, so the safe assumption is that it may — and that the fitter should be told sealant was used.

How far can I drive on it?

To a fitter, at reduced speed, following the instructions on the canister. It is a get-you-there product, and the tire still needs inspecting from the inside afterwards.

Tools this fits

More tire repair kits

Romon 48-piece plug kit

The compact plug kit: 48 pieces including a valve core tool, which is the part that lets you deflate and refit a valve properly.

Pieces
48, stated
Valve tool
4-in-1 valve core tool, stated
Tools
Knife, tire repair needle and spiral needle, stated
Storage
Box included, stated as small and light
Amazon reference
B0D2Y1D969
EAN
6976115501371
- A valve core tool included, which most kits omit and which is needed more often than the plugs
- Small enough to keep in the car rather than the garage
- Plug repairs are temporary and every maker says so
Best for: A boot kit for a tread puncture, on a car with a full-size or space-saver spare as the alternative.

≈ $38
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TOURGUARD 17-piece kit, 5 plugs

The cheapest kit here, with five plugs counted out and stainless steel rubber-coated T-handles.

Pieces
17, itemized
Plugs
5, self-vulcanizing — 29% of the piece count
T-handle metal
Stainless steel — the only stainless claim on this shelf
Grips
Ergonomic, rubber-coated, stated for greater torque
Tools
T-handle rasp, T-handle insert, screwdriver
Valve parts
4 standard cores, 4 standard caps
Lubricant
Included
Price
$5.99 — the cheapest on this shelf
Spares
None, where CKAuto supplies two
Storage case
NOT STATED
Expiry date
NOT PUBLISHED
Pressure gauge
None
Amazon reference
B0G2M7YYF2
EAN
0746270574482
- Counts out five plugs, where three kits here count nothing
- The only stainless steel tool claim on this shelf
- 17 pieces, the lowest count on the figure this shelf ranks by
Best for: One puncture in the glovebox, with the tools that will still be good

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TOURGUARD 31-piece kit

A 31-piece plug kit at $9.99 whose five bullets are shared word for word with a 68-piece kit.

Pieces
31
Plugs
NOT PUBLISHED
Tools
T-handle and spiral probe, "refined high-quality steel"
Case
Portable storage case, no dimensions published
Price
$9.99 — the same price per piece as the 68-piece AUTOWN kit
Bullets
All five shared word for word with the AUTOWN 68-piece kit
Shelf life
Stated as "long", with no date
Weight
NOT PUBLISHED
Plug dimensions
NOT PUBLISHED
Steel grade
NOT PUBLISHED
Tire type
NOT STATED
Pressure gauge
None
Amazon reference
B0G2Y8T8CR
EAN
0746270775124
- $9.99 for 31 pieces — the same price per piece as a kit twice the price
- Carries the T-handle and spiral probe pair this shelf calls decisive
- All five bullets belong to another brand’s 68-piece kit
Best for: The lowest price per piece on this shelf, with the pieces uncounted

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Others worth a spot in the toolbox

BGS 723 diode test lamp

A workshop tester covering 3 to 48 V with a piercing function — the tool for finding a break in a loom rather than a fuse.

Range
3–48 V, stated
Type
Diode test lamp with LED indication, stated
Function
Piercing function for insulated cables, stated
Amazon reference
B00154CKA8
EAN
4026947007236
- 48 V covers commercial and some hybrid auxiliary systems as well as car circuits
- An LED diode design draws far less current than an incandescent lamp — safer around modules
- A piercing probe leaves a hole in the insulation, which must be sealed afterwards
Best for: Tracing a fault along a loom, where the wire cannot be reached at a connector.

≈ $33
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CrysGuard EM415PRO wire tracer, 6–42 V

A transmitter and probe that follows a hidden wire without touching its insulation.

Type
Wire tracer — transmitter and receiver probe
Method
Non-invasive; traces behind dashboards, panels and carpets
Range
6–42 V DC
Continuity
CONT mode — one of two tools here that publish continuity
Probe
7 in (178 mm), flexible
Supplied
Test leads, alligator clips, 9 V batteries, insulation tape, carrying case
Stated vehicles
Cars, motorcycles, trailers, motorhomes, boats
Price
$23.99 — the most expensive tool on this shelf
Voltage reading
None — it indicates rather than measures
Lead length
NOT PUBLISHED
Signal frequency
NOT PUBLISHED
Battery life
NOT PUBLISHED
Amazon reference
B0F9RW3JKB
EAN
0850076158002
- The only non-invasive tool here — nothing is pierced, cut or unplugged
- The only one that finds an open circuit in the middle of a loom
- Not a voltmeter: it indicates rather than reads a voltage
Best for: A break somewhere inside a loom, found without cutting into it

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FEAOXYO 6–24 V lamp tester, 0.99 m (3.2 ft) lead

The cheapest tool here, and one of two with a bulb rather than a diode.

Range
6–24 V DC
Indicator
Filament bulb; brightness varies with the measured voltage
Loads the circuit
Yes — which is how it proves a circuit can carry current
Lead
39 in (0.99 m) polyurethane, stated flexible and robust
Probe
Long sharp stainless steel; pierces insulation
Handle
Insulated, non-slip, transparent
Clips
Large alligator
Price
$4.95 — the cheapest tool on this shelf
Bulb rating
NOT PUBLISHED
Voltage reading
None
Polarity indication
None
Probe sleeve
None
Amazon reference
B0DX5GMXYH
EAN
0649226718124
- A bulb, so it proves a circuit can actually carry a load
- Brightness varies with voltage, which shows a volt drop at a glance
- Draws real current, so it must stay away from module outputs
Best for: Lights, motors, horns and fuses, where a reading is not enough

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