Unrivaled Customer Service
And Expert Tech Advice!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

JEGS Stud Mounted Valve Spring Compressor Tool

JEGS 80521


jegs shipping
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
JEGS Stud Mounted Valve Spring Compressor Tool $44.94
Stud Mounted Valve Spring Compressor Tool
  • Cylinder Head On
  • Stud Mount
  • For 3/8" & 7/16" Rocker Studs
  • 12" Handle
  • Steel

  • JEGS 80521 Details

    Stud Mounted Valve Spring Compressor Tool

    Make between-rounds valve spring changes quickly and easily with JEGS valve spring compressors.

    Changing valve springs at the track or with the cylinder head on the bench just got easier. Install on 3/8" or 7/16" studs (with spring diameters ranging from 1" to 2") to compress high-load race valve springs. 12" handle and rubber non-slip grip. For use with heads still on the engine, we suggest Air Hold Adapter #555-80522.

    80521 is rated 4.7 out of 5 by 22.
    Rated 5 out of 5 by from Great tool, has nice feel. In the lock position it's firm and will not Accidentally release on its own.
    Date published: 2018-03-19
    Rated 5 out of 5 by from Great Tool Just got it the mail today it's a great tool for chevy valve springs I don't think it will work on over head valves again buy it it gets those springs down no problem
    Date published: 2018-02-17
    Rated 5 out of 5 by from Works perfect! Worked great! I changed a set of really stiff springs for my roller Big Block Chevy. Did exactly what it should!
    Date published: 2017-10-02
    Rated 5 out of 5 by from I'm very happy with how it worked and it made it user friendly with how you could move the handle in any position so you could avoid any obstacles to compress the spring. The only thing I didn't care for is that it wasn't made in the USA.
    Date published: 2017-08-13
    Rated 5 out of 5 by from Amazing tool to use with heads on. Extremely user friendly and its tough. I love the break over action and locks in position to use both hands with no sweat. Fits both size studs so its a win-win.
    Date published: 2017-07-27
    Rated 5 out of 5 by from Great tool & price Used several different kind before but this one was the best yet. Works just as well as the high dollar ones
    Date published: 2017-06-10
    Rated 5 out of 5 by from Valve spring ease This product made valve spring easy. Plenty of leverage for heavy roller rocker springs. Very stable and easy to use.
    Date published: 2017-05-05
    Rated 5 out of 5 by from Easy to use This compressor is the best I used to check spring height and add shims plus install new springs a must have tool. Thank you.
    Date published: 2017-02-26
    • y_2018, m_7, d_20, h_24
    • bvseo_bulk, prod_bvrr, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasreviews, tv_1, tr_21
    • loc_en_US, sid_10001_10001_94774, prod, sort_[SortEntry(order=RATING, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs

    Will this work on mid 70's 318?

    Asked by: Bridog
    Yes, as long as your rockers use a 3/8" or 7/16" stud.
    Answered by: Rusty B
    Date published: 2018-04-17

    Will this work on a 502 chevy.

    Asked by: Damifino
    Yes, as long as you are using a stud mounted rocker arm.
    Answered by: Rusty B
    Date published: 2018-04-03

    Is there a maximum spring pressure this tool can safely handle?

    Asked by: Mister Red
    This will handle up to 600lbs of spring pressure.
    Answered by: Jon Jegs Tech
    Date published: 2017-10-27

    Will this tool work on a sbc 350

    Asked by: Azizakhie
    This is compatible with the 350 Chevy.
    Answered by: Jon Jegs Tech
    Date published: 2017-10-24
    • y_2018, m_7, d_20, h_24CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_4
    • loc_en_US, sid_10001_10001_94774, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs
    Items You Need
    Items You May Also Consider
    Some parts are not legal for use in California or other states with similar laws / regulations