Does this work on a early Chevy 5.3?

I used it on a 1966 283 Chevy engine. I found it easy to use and very effective. You will need a small wrench to tighten the tool into the spark plug opening. I ran about 40 PSI on the unit and left my air compressor running as needed.

Will this work on a small block Chevy 350 ?

YES! It will work on Chevy 350, 305, any small block. The two thread sizes it comes with fits most cars.

I used it, the high pressure tube blew out at 60psi on the very first use, the return window is closed, will you take it back?

If you're changing valve seals you only need 35 to 40 PSI.

Do you make a solid tube for when the spark plug is recessed several inches? Where a flexible valve holder cannot be tightened.

My spark plug is recessed about an inch if that and I used an old 3/8 wrench and bent the end so that I could get in to the recessed area and tighten the fitting. You do not have to make it very tight to get a seal. If your plug is recessed several inches, then I think the only option you would have would to be make up a tube that would slide over the air hose on the kweiny and use that to tighten the fitting. Good luck, Jim

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Engine Air Valve Holder(Heavy Duty Hose 1000PSI) Fit M12 or M14

Product ID: 97870816

Details

Brand
kweiny
Fit Type
Vehicle Fit
Material
Brass Rubber
Number of Pieces
1
Vehicle Service Type
ATV Motorbike

🔧1000 PSI max pressure

🧵Steel wire braided hose

🛠️Fits M12 & M14 spark plugs

127.33 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Description

🔩 Lock in precision, unlock engine secrets!

DURABLE HEAVY DUTY HOSE - Upgraded steel wire braided hose ensures maximum strength and longevity under pressure.
LEAKAGE DIAGNOSIS MADE SIMPLE - Pinpoint air leaks during compression stroke by listening for continuous air escape.
PRECISION CYLINDER PRESSURIZATION - Hold valves closed effortlessly with up to 1000 PSI compressed air pressure.
UNIVERSAL SPARK PLUG COMPATIBILITY - Seamlessly fits M12 and M14 spark plugs for versatile engine diagnostics.
NON INVASIVE VALVE SEAL REPLACEMENT - Replace oil seals without dismantling the engine—save time and avoid hassle.

The kweiny Engine Air Valve Holder is a heavy-duty diagnostic tool designed for gasoline engines with M12 or M14 spark plugs. Featuring a steel wire braided hose rated up to 1000 PSI, it pressurizes cylinders to hold valves closed, enabling oil seal replacement without dismantling. It also aids in detecting air leaks during compression strokes, making engine maintenance faster and more precise.

Specifications

ASIN	B07FYCSKJV
Automotive Fit Type	Vehicle Specific Fit
Best Sellers Rank	#496,315 in Automotive ( See Top 100 in Automotive ) #232 in Engine Valve Train Tools
Brand Name	kweiny
Compatible with Vehicle Type	ATV, Motorbike, Passenger Car, Truck
Customer Reviews	4.2 4.2 out of 5 stars (475)
Fit Type	Vehicle Specific Fit
Item Diameter	14 millimeters
Item Weight	5.5 ounces
Manufacturer	Xingzhu
Manufacturer Part Number	XZAMR000
Material Type	Brass, Rubber
Model Number	5824091470
Number of Pieces	1
Shape	Round
UPC	781573032666
Unit Count	1 Count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

127.33 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews