SKU: 91134490029

COMP Cams Valve Locks 3/8in Four Groove

Sale price$25.16 Regular price$27.95
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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28

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Description

COMP Cams Valve Locks 3/8in Four Groovelock angle and 3 8" valve stem size are a perfect replacement lock for stock engine rebuilds. They are recommended only for street Applications with lighter valve spring loads. It is critically important to make sure valve locks match the valve size. There should always be a small gap between the two halves of the lock when they are properly positioned on the valve stem. If the two halves fit together without a gap, they are too large. If the locks

lock angle and 3/8" valve stem size are a perfect replacement lock for stock engine rebuilds. They are recommended only for street Applications with lighter valve spring loads. It is critically important to make sure valve locks match the valve size. There should always be a small gap between the two halves of the lock when they are properly positioned on the valve stem. If the two halves fit together without a gap, they are too large. If the locks fit tight to the stem and leave a gap between the middle of the lock and the OD of the stem, the locks are too small. Most people believe that the tang inside a valve lock Oldsmobile the retainer and valve spring in place while the engine is running. This is not the case. The cross-section of material in the tang is not strong enough to withstand open spring loads of 1000 lbs. or more. The sole purpose of the tang is to temporarily locate the lock, retainer and spring relative to the valve until the taper of the retainer can nest around the outside surface of the lock. This creates a "collet" effect that binds the two together. The more spring force exerted on the retainer (as the valve opens), the more force applied by the "collet" effect to keep the retainer and lock in place.

Catalog
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This Part Fits:

Year Make Model Submodel
1979-1980 Chrysler Cordoba 300
1975-1983 Chrysler Cordoba Base
1980 Chrysler Cordoba Crown
1980-1982 Chrysler Cordoba LS
1983-1985 Chrysler Fifth Avenue Base
1977-1981 Chrysler LeBaron Base
1977-1981 Chrysler LeBaron Medallion
1978 Chrysler LeBaron S
1979-1981 Chrysler LeBaron Salon
1980-1981 Chrysler LeBaron Special
1979-1982 Chrysler New Yorker Base
1977-1978 Chrysler New Yorker Brougham
1971,1974-1981 Chrysler Newport Base
1971-1972,1974-1976 Chrysler Newport Custom
1971-1972 Chrysler Newport Royal
1978-1981 Chrysler Town & Country Base
1964 Dodge 330 Base
1964 Dodge 440 Base
1964 Dodge 880 Base
1964-1965 Dodge 880 Custom
1964-1970 Dodge A100 Truck Base
1968-1970 Dodge A100 Truck Sportsman
1976-1980 Dodge Aspen Base
1976-1977 Dodge Aspen Custom
1976-1977 Dodge Aspen Special Edition
1975-1980 Dodge B100 Base
1971-1974 Dodge B100 Van Base
1971-1974 Dodge B100 Van Sportsman
1981-1986 Dodge B150 Base
1975-1980 Dodge B200 Base
1971-1974 Dodge B200 Van Base
1972-1974 Dodge B200 Van Maxi
1972-1974 Dodge B200 Van Maxi Wagon
1971-1974 Dodge B200 Van Sportsman
1981-1986 Dodge B250 Base
1975-1980 Dodge B300 Base
1971-1974 Dodge B300 Van Base
1972-1974 Dodge B300 Van Maxi
1972-1974 Dodge B300 Van Maxi Wagon
1971-1974 Dodge B300 Van Sportsman
1981-1986 Dodge B350 Base
1974-1980 Dodge CB300 Base
1970-1974 Dodge Challenger Base
1970-1971 Dodge Challenger R/T
1972 Dodge Challenger Rallye
1970 Dodge Challenger T/A
1969-1971 Dodge Charger 500
1966-1974,1976 Dodge Charger Base
1967-1971 Dodge Charger R/T
1969 Dodge Charger SE
1971-1978 Dodge Charger Special Edition
1976 Dodge Charger Sport
1971 Dodge Charger Super Bee
1965-1970 Dodge Coronet 440
1965-1970 Dodge Coronet 500
1965-1966,1970-1976 Dodge Coronet Base
1971,1975-1976 Dodge Coronet Brougham
1971-1976 Dodge Coronet Crestwood
1971-1975 Dodge Coronet Custom
1966-1970 Dodge Coronet Deluxe
1967-1970 Dodge Coronet R/T
1968-1970 Dodge Coronet Super Bee
1975-1979,1986 Dodge D100 Custom
1976-1978 Dodge D100 Warlock
1979 Dodge D100 Warlock II
1968-1974 Dodge D100 Pickup Base
1964-1967 Dodge D100 Series Base
1977-1986 Dodge D150 Base
1978-1979 Dodge D150 Li'l Red Express
1982-1983 Dodge D150 Miser
1977-1980 Dodge D200 Base
1975-1976 Dodge D200 Custom
1968-1974 Dodge D200 Pickup Base
1964-1967 Dodge D200 Series Base
1981-1986 Dodge D250 Base
1977-1980 Dodge D300 Base
1975-1976 Dodge D300 Custom
1968-1974 Dodge D300 Pickup Base
1964-1967 Dodge D300 Series Base
1981-1986 Dodge D350 Base
1978-1981 Dodge D400 Base
1978-1981 Dodge D450 Base
1964-1968 Dodge Dart 270
1964-1976 Dodge Dart Base
1969-1975 Dodge Dart Custom
1971-1972 Dodge Dart Demon
1971-1972 Dodge Dart Demon 340
1964-1969 Dodge Dart GT
1968-1969 Dodge Dart GTS
1971-1974 Dodge Dart Special
1974-1975 Dodge Dart Special Edition
1973-1976 Dodge Dart Sport
1973 Dodge Dart Sport 340
1974-1975 Dodge Dart Sport 360
1969-1976 Dodge Dart Swinger
1975-1976 Dodge Dart Swinger Special
1977-1981 Dodge Diplomat Base
1977-1983 Dodge Diplomat Medallion
1978 Dodge Diplomat S
1979-1986 Dodge Diplomat Salon
1984-1986 Dodge Diplomat SE
1974 Dodge M300 Base
1978-1979 Dodge Magnum XE
1980-1983 Dodge Mirada Special Coupe
1968 Dodge Monaco 500
1968-1978 Dodge Monaco Base
1974,1977-1978 Dodge Monaco Brougham
1977-1978 Dodge Monaco Crestwood
1974 Dodge Monaco Custom
1975-1976 Dodge Monaco Royal
1975-1976 Dodge Monaco Royal Brougham
1968-1969 Dodge Polara 500
1964-1973 Dodge Polara Base
1971 Dodge Polara Brougham
1970-1973 Dodge Polara Custom
1970 Dodge Polara Special
1974-1986 Dodge Ramcharger Base
1981-1986 Dodge Ramcharger Royal SE
1975-1980 Dodge Ramcharger SE
1978,1980 Dodge RD200 Base
1975-1977 Dodge Royal Monaco Base
1975-1977 Dodge Royal Monaco Brougham
1979-1981 Dodge St. Regis Base
1975-1977,1986 Dodge W100 Custom
1968-1974 Dodge W100 Pickup Base
1964-1967 Dodge W100 Series Base
1977-1986 Dodge W150 Base
1975-1980 Dodge W200 Base
1969-1974 Dodge W200 Pickup Base
1964-1967 Dodge W200 Series Base
1981-1986 Dodge W250 Base
1977-1980 Dodge W300 Base
1975-1976 Dodge W300 Custom
1968-1974 Dodge W300 Pickup Base
1964-1967 Dodge W300 Series Base
1981-1986 Dodge W350 Base
1964-1974 Plymouth Barracuda Base
1970-1971 Plymouth Barracuda Gran Coupe
1964-1970 Plymouth Belvedere Base
1968-1970 Plymouth Belvedere Satellite
1965-1967 Plymouth Belvedere II Base
1970-1974 Plymouth Cuda Base
1970-1973 Plymouth Duster 340
1974-1975 Plymouth Duster 360
1970-1975 Plymouth Duster Base
1975 Plymouth Duster Custom
1976 Plymouth Duster Sport
1964-1967,1975-1978 Plymouth Fury Base
1971,1975 Plymouth Fury Custom
1968,1970-1975 Plymouth Fury Custom Suburban
1972 Plymouth Fury Gran Coupe
1972 Plymouth Fury Gran Sedan
1974 Plymouth Fury Police
1970 Plymouth Fury S-23
1976-1978 Plymouth Fury Salon
1965-1971,1975-1978 Plymouth Fury Sport
1970-1971 Plymouth Fury Sport GT
1968,1970-1978 Plymouth Fury Sport Suburban
1968,1970-1978 Plymouth Fury Suburban
1966,1968-1969 Plymouth Fury VIP
1968-1974 Plymouth Fury I Base
1965-1974 Plymouth Fury II Base
1973 Plymouth Fury II Custom Suburban
1965-1974 Plymouth Fury III Base
1972-1977,1980-1983 Plymouth Gran Fury Base
1975-1977 Plymouth Gran Fury Brougham
1975-1976 Plymouth Gran Fury Custom
1980,1984-1986 Plymouth Gran Fury Salon
1975-1976 Plymouth Gran Fury Sport
1967-1968 Plymouth GTX Base
1975-1980 Plymouth PB100 Voyager
1974 Plymouth PB100 Van Voyager
1981,1983 Plymouth PB150 Voyager
1975-1980 Plymouth PB200 Voyager
1974 Plymouth PB200 Van Voyager
1974 Plymouth PB200 Van Voyager EX
1974 Plymouth PB200 Van Voyager EX Wagon
1981-1983 Plymouth PB250 Voyager
1975-1980 Plymouth PB300 Voyager
1974 Plymouth PB300 Van Voyager
1974 Plymouth PB300 Van Voyager EX
1974 Plymouth PB300 Van Voyager EX Wagon
1981-1983 Plymouth PB350 Voyager
1968,1971-1975 Plymouth Road Runner Base
1965-1974 Plymouth Satellite Base
1971 Plymouth Satellite Brougham
1971-1974 Plymouth Satellite Custom
1971-1974 Plymouth Satellite Regent
1971-1974 Plymouth Satellite Sebring
1971-1974 Plymouth Satellite Sebring Plus
1968-1970 Plymouth Satellite Sport
1964 Plymouth Savoy Base
1971-1976 Plymouth Scamp Base
1975 Plymouth Scamp Brougham
1975-1976 Plymouth Scamp Special
1974-1981 Plymouth Trailduster Base
1968-1969 Plymouth Valiant 100
1964,1966 Plymouth Valiant 200
1964-1967,1970-1976 Plymouth Valiant Base
1974-1975 Plymouth Valiant Brougham
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 91134490029

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4.0 ★★★★★
Based on 7 reviews
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Product Reviews
S
Verified Purchase
SteveM
Boise, US
★★★★★ 5
High Quality
This tool has very nice weight (all metal) and very nice machined finish. Feels very premium without the premium price. Well thought out with the magnetic base or 3m double sided tape included. Nice that they included replacement needles. Would definitely buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 18, 2023
M
Verified Purchase
Moira
West Palm Beach, US
★★★★★ 5
Good for ninja
Makes me feel like a barista
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
A
Verified Purchase
Alan
Massapequa, US
★★★★★ 5
Works great and is affordable!
Color: Black
Works great! The magnet it comes with is quite weak. But the tool itself works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
J
Verified Purchase
Jemagu
Chelsea, US
★★★★★ 5
No gimmicks, just a solid WDT tool
Color: Metal Black
This is the second Aieve product I’ve purchased, after a very good experience with their XL espresso cooling ball. This WDT tool isn’t flashy, it doesn’t look like a praying mantis or deploy like a switchblade; but it does exactly what it’s supposed to do. The tool sits in a nicely weighted base that protects the needles from bending, which is a big improvement over the magnetic “floating” styles. The base has enough weight to stay put, and it’s easy to remove and return the tool without it tipping or sliding around. The base itself fits nicely in my tamping station. It also comes with replacement needles, which are simple to swap out when needed. If you’ve been going down the rabbit hole comparing every WDT tool out there, this is a straightforward, well-designed option at a very reasonable price.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
L
Verified Purchase
Living Wage Advocate
Alexandria, US
★★★★★ 4
Solid 4mm WDT tool with a solid stand and a magnet option for some machines.
Color: Black
Solid WDT tool with good hand feel and convenient counter top stand. 4mm needles and it works fine. 10 of these 4mm needles adequately stir the espresso in the portafilter. No real complaints about build quality. I attached the included magnet. There are many people who have identified that the magnet is not strong. This is true but it depends on the materials on your espresso machine or grinder. On stainless steel units (unpainted or thinly painted) it has good adhesion. On units that might have used thick paint ( which shouldn't be compromised) it may not stick well. So I took a star off--I do have a stainless steel Espresso machine and it sticks fine. It also stuck ok to my refrigerator , microwave and airfryer. If your espresso station is near other appliances---well there you go--also it does show that it "can stick" to fairly common other magnetic materials. My refrigerator is coated in white . I was going to simply buy acupuncture needles, a wine cork and make one of these but add those costs together and heck $9 for this unit with a stand was a great deal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2026

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