Piston Ring Compressor 90 - 175mm — Teng Tools AT020

Teng Tools Piston Ring Compressor 90-175 mm — Spring-Loaded Adjustable Band for Engine Assembly Automotive Tools - AT020

$42.99
$42.99
Skip to product information
Piston Ring Compressor 90 - 175mm — Teng Tools AT020
  • Piston Ring Compressor 90 - 175mm — Teng Tools AT020
Teng Tools Piston Ring Compressor 90-175 mm — Spring-Loaded Adjustable Band for Engine Assembly Automotive Tools - AT020

Teng Tools Piston Ring Compressor 90-175 mm — Spring-Loaded Adjustable Band for Engine Assembly Automotive Tools - AT020

$42.99
$42.99
Pay over time: how it works
  • Shop Pay Installments — split into four interest-free payments, or monthly on larger orders. Choose Shop Pay at checkout.
  • Affirm — monthly plans, with 0% APR up to 12 months on eligible orders. Choose Affirm — Pay Over Time under Payment in the standard checkout: the black Check out button, not the purple one.
  • Checking your options does not affect your credit score. The price is the same whichever way you pay.
Full financing guide, opens in a new tab
Low stock
  • Fast US dispatch from our Fort Worth, Texas warehouse
  • Genuine Teng Tools — professional-grade, designed in Sweden
  • Secure checkout — encrypted payment, trusted providers
  • Backed by guarantee — built to last a working lifetime
Download data sheet (PDF)
When a rebuild reaches the point where pistons meet bores, controlled ring compression is what separates a clean installation from scored walls and snapped rings. This Teng Tools unit adjusts continuously from 90 mm to 175 mm, spanning the cylinder diameters found in most passenger-car four-cylinders, V6 and V8 engines, and many light-truck powerplants. The spring-loaded mechanism applies steady, even pressure around the entire circumference of the ring package. Tighten the band to the bore diameter, seat it on top of the cylinder, and tap the piston home. The consistent force keeps every ring compressed flush against its land so nothing catches on the deck surface or the chamfer at the top of the bore. Because the range is continuous rather than stepped, you are never stuck between two fixed sizes. That single-tool flexibility is especially valuable in a busy shop where engines of different displacements roll through the same bay. It also serves double duty during teardown, holding rings in place while you slide a piston out for inspection. Built as tools for mechanics who measure success in comebacks avoided, this compressor earns its keep every time you reassemble a short block. Pair it with a torque plate and your preferred ring-gap file, and the bottom end goes together the way the service manual intended.

Specifications

CategoryEngine Tools
Part numberAT020
Shipping

Free shipping on orders over $99. Orders are stocked, picked and shipped from our warehouse in Fort Worth, Texas — orders placed on business days ship same-day wherever possible.

Lifetime warranty

Teng Tools hand tools are backed by a lifetime warranty against manufacturing defects. Screwdriver bits and socket bits are consumables and are guaranteed to meet dimensional standards. Torque wrenches and air tools can be serviced and recalibrated on request — contact us to arrange it.

Returns

Not right for the job? Contact us within 30 days of delivery and we'll sort out a return or exchange. Tools must be unused and in their original packaging. Warranty claims are handled separately — a defective tool is our problem, not yours.

Why Teng Tools?

Swedish Design Since 1985

Trusted in 30+ countries. Designed in Sweden, built to ISO and DIN standards.

Shipped Fast from Texas

US warehouse in Fort Worth, so orders move fast. TAA approved for government and defense.

Lifetime Warranty

Something goes wrong? Send a photo and your order number — same-day shipping on replacements.

The Devil Is in the Detail

Satin-finish wrenches, through-blade screwdrivers, heavy-gauge storage — built to last.

You may also like