Account Login
Gift Cards
Track Order
Help Center

Proform Tapered Piston Ring Compressor for 4.030" Bore


Product Q&A
View Now
Click image to zoom
Tapered Piston Ring Compressor for 4.030" Bore
3 left in stock
Tapered Piston Ring Compressor
  • 4.030'' Bore
  • QTY

    Items You May Also Consider

    67445 - Proform Tapered Ring Compressors is rated 4.0 out of 5 by 7.
    Rated 5 out of 5 by from Good product I bought a set of these ring compressors to replace a worn out band type, after sanding a little coating off the lower inside edge these worked flawlessly. I could literally push the pistons in with my thumbs. Although compared to the old band style these seem a little pricy but they saved me time and preformed beyond my expectations. If you are looking for a good ring compressor I would recommend getting these!
    Date published: 2021-03-02
    Rated 5 out of 5 by from Works great! A MUST for narrow piston rings! Only assembled one engine with it so far, but works great.
    Date published: 2020-03-09
    Rated 2 out of 5 by from Maybe, maybe not. Was unable to use this ring compressor on my build. The rings wouldn’t transfer from the compressor to the block without popping out in between. Maybe if I had a bit more chamfer on the cylinder bores the lip on the compressor may have nested better to the block.
    Date published: 2021-07-15
    Rated 1 out of 5 by from No good Couldn't get it to work properly thought it might have just been me had 4 other mechanics try it could not get even one piston to go into block the ID of it is larger than bore allows oil rings to expand before entering block
    Date published: 2016-03-12
    • y_2023, m_9, d_22, h_3
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.35
    • cp_1, bvpage1
    • co_hasreviews, tv_3, tr_4
    • loc_en_US, sid_10001_10001_312252, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Items You Need

    Related Products

    Piston Installation Tool; 4.030 in. Bore; Blue Anodized Aluminum; • Designed for fast, easy installation of pistons in most popular bore diameters• Tapered inner diameter of tool compresses piston rings to proper bore size, completley eliminating chances of unseen ring ...

    Recently Viewed

    Some parts are not legal for use in California or other states with similar laws / regulations

    Motor Vehicles

    WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.


    WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.

    Electrical Cords

    WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.