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Manley 23670I-16
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Manley Super 7° Titanium Retainers Impingement Surface


made in usa
Free Shipping Ships directly from the manufacturer on 08/28/19
Save $20 off $250, $40 off $500, $100 off $1,000. Promo Code: RACE2SAVE exclusions apply

Manley Super 7° Titanium Retainers Impingement Surface $407.99
Out of stock
Super 7° Titanium Retainers
  • Impingement Surface
  • 1.550'' Spring O.D.
  • Double Spring Type
  • (A) 1.500'' O.D.
  • (B) 1.105'' I.D.
  • (C) 0.710'' I.D.
  • (D) N/A
  • Standard Height
  • 19 Grams
  • 16/pkg.
  • Manley 23670I-16 Details

    1.550'' Spring O.D.

    This retainer is ideal for use with valve spring:
  • Manley p/n 660-22431, 660-22440, 660-22441

  • Specifications:

    Manufacturer's Part Number:

    Ti-17 Alloy

    The original stamped 7° valve lock served the industry well until drag racers discovered the ''Vasco Jet'' valve spring in the early 1970's. The use of these previously undreamed of spring pressures caused periodic failures as the little 7° lock was vulnerable to extrusion through the retainer. Drag race engine builders seized upon the evidence of locks pushed through retainers as proof of the inadequacy of the 7° design. This is how the 10° lock came to be. In reality, the problem with the 7° lock was not the angle. The 7° lock was simply too skinny to provide enough resistance to being pushed through the retainer. Meanwhile, circle track engine builders responded to the same challenge with a Super 7° lock that maintained the superior clamping properties of the original 7° piece but overcame the extrusion problem with increased lock thickness. Manley Performance supports both 10° and 7° systems with the highest quality locks and retainers in the industry, manufactured of both steel and titanium.

  • Super 7° angle is actually 8° (Use with Manley Super 7° Valve Locks)
  • Heat treated Titanium material for maximum strength
  • Available with or without Manley's exclusive impingement surface enhancement process
  • Impingement results in a 20% improvement in resistance to abrasion, a 30% improvement in fatigue strength, and an overall improvement in surface finish
  • ''L'' suffix indicates Lightweight version which is 3-4 grams lighter than standard part number

  • 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.