Outside Diameter of Outer Spring 0.959" (1) 1.18" (1) 1.3" (1) 1.31" (2) 1.336" (1) 1.437" (1)

Valve Spring Style Beehive (4) Standard (38)

Spring Height 1.979" (1) 2.05" (1) 2.19" (1)

Number of Springs Per Valve Double (7) Single (3)

Inside Diameter of Inner Spring 0.36" (1) 0.393" (1) 0.51" (1) 0.63" (1) 1.05" (1)

Notes 2001-2016 GM Duramax family; retainer, OEM 12636393; OEM ref: 12636393; 97225507, 97366945; 97225508, 97366946 (1) 2006-2007 GM 8.1L Vortec; retainer for conical intake/exhaust springs (1) 2011-2020 Ford 6.8L Triton V10; conical spring; 91 415 C.I., (6.8L), SOHC, CNG, GAS, LPG, FI, 20 Valve, Vin S, ""Triton"" 1997-19 PART Valve Seat Insert FOT415-HD20V BORE - 90.2mm/3.55"" V1 (1) Both-position lower spring rotator / retainer for stealth applications; use with lower rotator 161-1052; 13 728 C.I., (12.0L), E7-ETECH & ASET, Diesel, OHV, 24 Valve, ""TURBO"" L6; OEM ref: 12GC212A; 25502378; 575GC213 (1) Ford tractor 2.0L 8N / similar; retainer; OEM ref: 1BA6505A2; 4Q6512; 8BA6507A (1) Ford tractor 2.0L exhaust rotator / rototype; OEM ref: 4Q6512; 7HA6518A; 8BA6510B (1) Retainer (1) Retainer; 110 360 C.I., (5.9L), OHV, GAS, CARB, 16 Valve, Vin 7, N, P, ""AMC"" 1970-91 V8; OEM ref: 5011790AA; 5086736AA (1) Retainer; 2003-2010 Ford 6.0L/6.4L Power Stroke / MaxxForce 7; OEM/interchange refs: 3C3Z6514AA, Melling VSR707, PEP VSR328 (1) Retainer; likely Cummins application (listed as new item for CUMMINS in SBI new/superseded feed) (1) Retainer; likely Ford application (listed as new item for FORD in SBI new/superseded feed) (1) Rotator / rotocap (2) Rotator / rotocap; 100 318 C.I., (5.2L), OHV, GAS, CARB, 16 Valve, ""Motor Home"" 1969-75 V8 (1) Rotator / rotocap; 107 2107 C.I., (34.5L), 3508B, Diesel, OHV, 32 Valve, ""Industrial/Marine TURBO"" 3508BIM V8; OEM ref: 121-2028, 210-2542, 468-8824, 20; 121-9835; 130-2607 (1) Rotator / rotocap; 14 780 C.I., (12.8L), MP8, Diesel, SOHC, 24 Valve, ""TURBO"" L6; OEM ref: 12GC412, ASET; 20864662, 21990221; 20904074, 20905400; Spring style: Single or Dual (1) Rotator / rotocap; 25 179 C.I., (2.9L), 3029D, Diesel, OHV, 6 Valve, ""PowerTech"" L3; OEM ref: R26125; R85687; R90692 (1) Rotator / rotocap; 28 359 C.I., (5.9L), 6B5.9NA/6B5.9TA/6B5.9T, Diesel, OHV, 12 Valve, ""Cummins N/A & TURBO"" L6; OEM ref: 3802355; 3802356; 3900250 (1) Rotator / rotocap; 43 361 C.I., (5.9L), D361, Diesel, OHV, 12 Valve L6; OEM ref: 1824680C1, NOTE; 1824683C1, NOTE; 671599C1 (1) Rotator / rotocap; 49 436 C.I., (7.1L), D436/DT436, Diesel, OHV, 12 Valve, ""N/A & TURBO"" L6; OEM ref: 1811581; 675442C1 (1) Rotator / rotocap; 51 855 C.I., (14.0L), N-14, Diesel, OHV, 24 Valve, ""TURBO"" L6; OEM ref: 138937; 3; 3054590 (1) Rotator / rotocap; 52 530 C.I., (8.7L), 530E, Diesel, OHV, 12 Valve, ""HEUI Electrical Inj"" L6; OEM ref: 1820264-C1, C; 1820826-C91, W; 1821901-C1, U (1) Rotator / rotocap; 58 1159 C.I., (19.0L), KTA19G/GC, Gas, OHV, 24 Valve, ""Natural Gas"" L6; OEM ref: 205091; 205208; 3018818 (1) Rotator / rotocap; 60 629 C.I., (10.3L), 3176, Diesel, OHV, 24 Valve, ""TURBO"" L6; OEM ref: 1008150; 116-1102; 138-1999, 138-2006 (1) Rotator / rotocap; 76 619 C.I., (10.1L), 6101A-T, Diesel, OHV, 12 Valve, ""500 Series TURBO"" L6; OEM ref: R102859; R102860; R40357, R53192 (1) Rotator / rotocap; 78 893 C.I., (14.6L), 3406, Diesel, OHV, 24 Valve, ""TURBO"" L6; OEM ref: 1N4885, 1N4886; 2A4429; 2S4213 (1) Rotator / rotocap; OEM ref: 102-6229, 163-2478; 166-2903; 166-2904; Spring style: Single or Dual (1) Rotator / rotocap; OEM ref: 12GC212A; 25502378; 446GC296; Spring style: Dual (1) Rotator / rotocap; OEM ref: 133-9306, W; 194-4902, I; 197-6995, W (4) Rotator / rotocap; OEM ref: 148-7455; 1487425, 1487502, 1621589; 2A4429 (1) Rotator / rotocap; OEM ref: 1833432C1; 1835655C1; 1835858C1, 1842146C1 (1) Rotator / rotocap; OEM ref: 1W1816; 3N1414; 7N2051; Spring style: Dual (1) Rotator / rotocap; OEM ref: 23515470; 23518571; 8929078, 23501580 (1) Rotator / rotocap; OEM ref: 3904716, 3924583, 3929005; 3906412, 3991085, 5292625; 3908830, 3924582 (1) Rotator / rotocap; OEM ref: 3925666, 3957914, N; 3925667, NOTE; 3926700 (1) Rotator / rotocap; OEM ref: 4N5906; 4W2471; 4W2472; Spring style: Single or Dual (2) Rotator / rotocap; OEM ref: R26125R; R41413; R41414 (1) Rotator / rotocap; OEM ref: R48313; R504235; R520223 (1) Rotator / rotocap; Spring style: Conical; Spring length used as height proxy: 2.050 in (1)