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Reviews·42

5.0 / 5Based on 42 reviews
4 ★0%
3 ★0%
2 ★0%
1 ★0%
Tom

I’ve been using the AUTOOL HTS518 walnut blaster and it’s extremely effective at…

I’ve been using the AUTOOL HTS518 walnut blaster and it’s extremely effective at cleaning engine carbon deposits. It fixed my unstable idle and high fuel consumption issues. The 1400W motor offers strong suction and the reusable walnut abrasive helps save cost. Great machine that restores engine performance perfectly!

Tuukka

The AUTOOL HTS518 walnut blaster is a reliable shop tool!

The AUTOOL HTS518 walnut blaster is a reliable shop tool! The 1400W motor and external air source blast away tough carbon deposits on valves and manifolds, fixing rough idling easily. The 23 adapters fit all my common models—BMW, VW, Mercedes—and the integrated spray/recovery with filter lets me reuse walnut sand. The swivel casters and adapter storage make it super easy to use daily. Worth every penny!

Marco B.

High-Efficiency Walnut Shell Blasting Machine

I’ve been using the AUTOOL HTS518 walnut shell sandblasting machine in the workshop, and it has significantly improved the efficiency of cleaning intake valves. The machine is easy to set up, and its dust collection system effectively contains the spread of walnut shell abrasives. The cleaning results are noticeably better than manual scraping. This machine is particularly useful when dealing with direct-injection engines that have severe carbon buildup. It’s solidly built and easy to move around the shop. Although some preparation and cleanup work is still required, overall it saves a significant amount of time and is a practical piece of equipment for a professional auto shop.

Specifications

BrandAUTOOL
Cleaning MethodWalnut media blasting + integrated vacuum recovery
Power1400 W rated, 50/60 Hz
Capacity30 L main unit
Intake Adapters23 types
Vacuum Suction0.02 MPa
Air Flow<300 L/min
Media Grit Size0.6–1.2 mm walnut media, approx. 2–4 kg required (not included)
Air SupplyExternal compressor (not included), ≤0.7 MPa, ≥6 bar recommended
ModesHigh/low mode, low-speed mode
Weight23.5 kg
Voltage Versions110V / 220V
CompatibilityCarbon cleaning of intake ports and intake valve backs; not for injectors, throttle bodies, cylinders, combustion chambers

Details

Blast and Recover Intake Carbon in One Workflow

The HTS518 cleans accessible intake ports and intake-valve backs with compressor-driven walnut blasting while its integrated vacuum collects loosened deposits and media. Walnut media and an external compressor are required and not included; it is not for injectors, throttle bodies, cylinders or combustion chambers.

  • 23 Intake Adapters
  • Integrated Vacuum Recovery
  • Built-In Dust Filter
  • Rear Storage Box
  • Telescoping Handle

Key Features

  1. Cleaning with Recovery

    External air drives the walnut media while the integrated vacuum path collects carbon and spent media.

  2. Adapters for Varied Port Shapes

    Choose the adapter profile for the port, then confirm fit and seal on the exact engine.

  3. Filtration and Media Reuse

    The filter separates recovered media from carbon residue. Product guidance gives 5–10 uses as a reference when the media stays dry, unclumped and uncontaminated.

  4. Selectable Modes

    High/low and low-speed modes, used according to the HTS518 manual.

  5. Mobile Storage Layout

    A rear storage box, three-section telescoping handle and 360° casters keep adapters with the unit between bays.

Model Comparison

HTS559 HTS518 HTS678
Main unit capacity 30 L 30 L 10 L
Configured connectors 5 types 23 types 23 types
Storage box / telescoping handle No / No Yes / Yes Yes / Yes
Pressure gauge and regulation No No Yes
HEPA filter No No Yes
Weight 12 kg 23.5 kg 52 kg

What’s in the Box

  • HTS518 main unit with integrated recovery
  • 23 intake adapters
  • Walnut blasting gun
  • Black pipe adapters
  • Flexible recovery hose
  • Protective goggles
AUTOOL HTS518 packing list with main unit and rear storage box, 23 intake adapters, goggles, blasting gun, two black pipe adapters and recovery hose
HTS518 package contents.

How to Use

  1. Load mediaAdd the manual-specified amount of dry walnut-shell media.
  2. Connect gun and hoseSecure the blasting gun and keep its nozzle within the recovery path.
  3. Prepare the portClose the target intake valve and isolate other openings as the vehicle procedure requires.
  4. Connect air and powerUse a dry, filtered compressor and the correct grounded power version.
  5. Blast and recoverClean one port at a time; blasting takes about 1–3 minutes per port depending on buildup.
  6. Recover and inspectVacuum remaining media, then inspect with good lighting or a borescope until none is visible.
  7. Reassemble and verifyRefit parts and complete leak checks and diagnostic and functional checks.

Adapter selection, compressor setup and maintenance: HTS518 user manual (PDF)

Good to Know

Caution
  • Requires an external compressor with stable, dry, filtered air and enough continuous airflow; tank size or peak pressure alone is not enough.
  • Never blast a port until its intake valve is fully closed and other openings are isolated.
  • The adapters are not universal; confirm engine, port geometry and seal.
  • Recover and inspect all residual media before startup rather than relying on the engine to clear it.
  • Walnut-shell dust may trigger allergies; wear eye and respiratory protection, ventilate and follow the media SDS.
Care
  • Clean based on inspection or diagnosis, not a fixed mileage interval; results in power or fuel economy are not guaranteed.

You may also like

Select specifications

Offers

  • 10%
    10% off AUTOOL & MRCARTOOLBrands: AUTOOL, MRCARTOOL, FXTUL, CMTOOL, DUOYI · United States, United Kingdom and Australia only. Cannot be combined with other coupons.Code: AB10OFF

Offers are applied at checkout according to the store rules.

Delivery

Ships in 1-3 business days

Warehouses

  • US Warehouse
  • DE Warehouse
  • UK Warehouse
  • CN Warehouse

Choose the warehouse in the specifications.

Payment methods

  • Credit / Debit CardVisaMastercardAmerican Express
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  • Google PayGoogle Pay
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Available methods may vary by currency and billing country; the final list is shown at checkout.

Service

  • Secure checkout

    Payments are processed over an encrypted connection.

  • After-sales support

    Contact us for installation or usage questions.

Specifications

Brand
AUTOOL
Cleaning Method
Walnut media blasting + integrated vacuum recovery
Power
1400 W rated, 50/60 Hz
Capacity
30 L main unit
Intake Adapters
23 types
Vacuum Suction
0.02 MPa
Air Flow
<300 L/min
Media Grit Size
0.6–1.2 mm walnut media, approx. 2–4 kg required (not included)
Air Supply
External compressor (not included), ≤0.7 MPa, ≥6 bar recommended
Modes
High/low mode, low-speed mode
Weight
23.5 kg
Voltage Versions
110V / 220V
Compatibility
Carbon cleaning of intake ports and intake valve backs; not for injectors, throttle bodies, cylinders, combustion chambers

Reviews42

5.0 / 5Based on 42 reviews
4 ★0
3 ★0
2 ★0
1 ★0
Tom

I’ve been using the AUTOOL HTS518 walnut blaster and it’s extremely effective at…

I’ve been using the AUTOOL HTS518 walnut blaster and it’s extremely effective at cleaning engine carbon deposits. It fixed my unstable idle and high fuel consumption issues. The 1400W motor offers strong suction and the reusable walnut abrasive helps save cost. Great machine that restores engine performance perfectly!

Tuukka

The AUTOOL HTS518 walnut blaster is a reliable shop tool!

The AUTOOL HTS518 walnut blaster is a reliable shop tool! The 1400W motor and external air source blast away tough carbon deposits on valves and manifolds, fixing rough idling easily. The 23 adapters fit all my common models—BMW, VW, Mercedes—and the integrated spray/recovery with filter lets me reuse walnut sand. The swivel casters and adapter storage make it super easy to use daily. Worth every penny!

Marco B.

High-Efficiency Walnut Shell Blasting Machine

I’ve been using the AUTOOL HTS518 walnut shell sandblasting machine in the workshop, and it has significantly improved the efficiency of cleaning intake valves. The machine is easy to set up, and its dust collection system effectively contains the spread of walnut shell abrasives. The cleaning results are noticeably better than manual scraping. This machine is particularly useful when dealing with direct-injection engines that have severe carbon buildup. It’s solidly built and easy to move around the shop. Although some preparation and cleanup work is still required, overall it saves a significant amount of time and is a practical piece of equipment for a professional auto shop.

Prima D.

A++, Packaging and Shipping was great, Walnut blaster as described, Quality…

A++, Packaging and Shipping was great, Walnut blaster as described, Quality great, Value was fine, Condition was perfect right out of the box, Appearance was as described. Sorry for not getting this review done earlier for you. Thanks for sending Email. Great doing business with you, Thanks Again, A++

Mike

Easy to use.

Cleans well and recycles the walnut sand

Baron W.

To everyone reading this, STOP!

To everyone reading this, STOP! Wasting money on sea foam or other products that you think it will take out the carbon buildup Because it will not! Buy this amazing walnut sandblasting tool and clean that carbon the right way. I did it and so can you. You won’t regret it trust me. God bless everyone.

Whinky

Great product. AAA++

Great product! I love it so much. The fact that you can recycle the walnut sand when you run out is fantastic!

Dass

Very sturdy

It cleans very well and is exceptionally easy to operate!

Weisz V.

Very good and cleans well

Good team! Excellent customer service, quick response.

john V.

Easy to use.

It doesn’t get any better than this.

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AUTOOL HTS518 30 L Walnut Blasting Machine with 23 Intake Adapters
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AUTOOL HTS518 Walnut Blasting Machine
AUTOOL HTS518 30 L Walnut Blasting Machine with 23 Intake Adapters

US$539.00

Select options This product has multiple variants. The options may be chosen on the product page