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Super Damper® Harmonic Dampers


The patented ATI Super Damper is the only crankshaft damper designed exclusively for high performance Chrysler, Dodge and Mopar Engines - including the new HEMI!
Whether you race or just drive on the street, ATI's harmonic balancers are the perfect choice.

  • Eliminates torsional crankshaft vibrations
  • Exceeds SFI 18.1 specs
  • Black zinc chromate finished
  • OEM equipment on 392 Mopar Crate Engines
  • Tunable, rebuildable, and extremely efficient at ALL RPM
  • Laser engraved 360° timing marks

Inner and outer shells are available in aluminum or steel, and contain a steel inertia weight. This inertia weight has six (2-ring design) or eight (3-ring design) computer machined grooves to retain the proper durometer O-rings (dyno tested for each application).

Damper Accessories
How to read this chart


ATI HEMI Damper


Chrysler Serpentine Dampers
ENGINE
DAMPER
PART #
OUTER
DIAMETER
WEIGHT
SHELL MATERIAL
SHELL #
RIBS
HUB #
HUB MATERIAL
6.1L / 392 HEMI
918432
6.78"5% OD
4.5 LBS
ALUM
917071
6
916652
STEEL
918437
7.53"17% OD
ALUM
917045
6
916652
STEEL
918438 [3]
5.50"13% UD
3.6 LBS
ALUM
916241 [6]
STEEL
5.7L HEMI ('09)
CHARGER, CHALLENGER, 300C,
GRAND CHEROKEE, COMMANDER
918445
6.78"OEM
4.5 LBS
ALUM
916246
STEEL
918446
7.53"18% OD
ALUM
916246
STEEL
918447 [3]
5.50"15% UD
3.6 LBS
ALUM
916245 [6]
STEEL
5.7L HEMI - CAR LENGTH
918436
7.53"10% OD
4.5 LBS
ALUM
917073
6
916247
STEEL
918435
6.78"2% UD
ALUM
917071
6
916247
STEEL
5.7L HEMI - TRUCK LENGTH
918434 [5]
7.53"4% OD
ALUM
917044
8
916248
STEEL
918433 [5]
6.78"5% UD
4.5 LBS
ALUM
917075
8
916248
STEEL
918439 [1,3]
5.50"15% UD
3.6 LBS
ALUM
8
916242 [6]
STEEL
4.7L & 3.7L - RAM, DAKOTA, GRAND
CHEROKEE WITH BOLT ON PULLEY
918429
7.07"OEM
6.25 LBS
ALUM
918850
916311
STEEL
918428
6.32"25% UD
3.9 LBS
ALUM
918850
916311
STEEL
NEON
917469 [2]
6.78"7% OD
4.5 LBS
ALUM
916422
STEEL
[1] Requires shorter belt (Goodyear #4070975) 7 groove.
[2] Use Duralast belt #560K4
[3] Must turn down OD of stock washer to 1.850”
  [4] Requires a 97.75” long belt - Gates part # K060975
[5] These are 8 groove dampers. Your OEM belt is 7 rib. Use the first groove closest to the engine. Aftermarket belts are 6 rib.
[6] Damper features integral steel hub with inner shell


Chrysler Dampers
 
STEEL SHEELS
ALUMINUM SHELLS

CRANKSHAFT HUB PART NUMBERS

7.074" OD
6.325" OD
7.074" OD
6.780"
6.325" OD
5.5" OD
3 RING
2 RING
3 RING
3 RING
2 RING
3 RING
3 RING
2 RING
3 RING

STEEL

ALUM

TOTAL WEIGHT
INERTIA WEIGHT

8.75 lbs
4.50 lbs
7.0 lbs
3.5 lbs
6.00 lbs
2.40 lbs
6.25 lbs
4.50 lbs
5.45 lbs
3.70 lbs
5.00 lbs
3.40 lbs
3.75 lbs
2.20 lbs
4.50 lbs
2.40 lbs
3.90 lbs
2.40 lbs
3.30 lbs
1.97 lbs
3.630 lbs
2.20 lbs
DAMPER ONLY LESS CRANKSHAFT HUB PART NUMBERS
CHEVROLET FRONT
917010
 
918940
917030
918850
917020
917000
917071
917070
917050
 

AVG WEIGHT
2.4 LBS

AVG WEIGHT
.85 LBS

CHRYSLER OEM FRONT
5/16" BOLTS
918441E
918605S
918446E [7]
918440E
918455E
917040E
917041E
       
CHRYSLER OEM FRONT
BLOWER DRIVE
3/8" PULLEY BOLTS
918442E
   
918440E
918445E
917042E
   
918443E
   
INTERNAL BALANCE DAMPER ASSEMBLY PART NUMBERS
V8 A 218-340-360
[2] [5]
CHEVROLET
FRONT [1]
918280
 
918281
917390
917391
     
917580
   
916190
 
         
917370 [10]
917430 [10]
   
917550 [10]
 
916191
OEM FRONT
918282E
 
918283E
917392E
917393E
           
916253
 
 
918605 [16]
   
917400E
917401E
       
916254 [8]
 
VIPER
V10
GEN 1 & 2
'92 - '02
OEM FRONT
         
917932E
         
916262
 
BLOWER DRIVES
[3]
         
917931E
         
916260
 
VIPER V10 GEN 3
'03-'06
[9] [11]
OEM FRONT
         
917934E
         
916265
 
BLOWER DRIVES
[3]
         
917933E
         
916264
[3]
 
VIPER V10 GEN 4
'08 [9]
OEM FRONT
         
917936E
           
916269
HEMI
PRO STOCK [1]
CHEVY FRONT
PASS SIDE TIMING
       
917981
             
916650L
DRV SIDE TIMING
       
917982
             
916651
V8 B 361
383
400
413
426
440
CHEVROLET
FRONT [1]
917120
 
917121
918430
918431
917380
917440
 
917590
   
916200L
 
     
917980
917981
917970
917960
 
917540
     
916650L
OEM FRONT
OEM TIMING
COVER
         
917470E
917477E
       
916661
 
917122E
[12]
   
917467E [12,13]
917468E [12,13]
           
916661L
 
         
917471E
917472E
         
916421
     
917473E [12,13]
917474E [12,13]
             
916421L
DONAVAN & KB GEAR DRIVE OR INDY TIMING COVER
         
917478E
917479E
       
916661L
 
917127E
[12]
   
917475E [12]
917476E [12]
           
916663
 
       
917930E
917937E
       
916421L
BLOWER DRIVES
A-FUEL
2.25" KEYWAYS 1@TDC
917123E
[15]
   
     
   
916256 [4]
 
OEM BB 2.25" KEYWAY OEM TIMING TAB
917110E
[14]
   
     
   
916258
 
EXTERNAL BALANCE DAMPER ASSEMBLY PART NUMBERS
V8 360
'71-'92
[2]
CHEVROLET FRONT
918600
916440
OEM FRONT
918603E
                 
916442
 
 
918605E
                 
916249
 
V8 360 MAGNUM '93-UP
[2]
OEM FRONT
918604E
                   
916442
 
V8 B 400-440
CAST CRANK
OEM FRONT
OEM TIMING
COVER ONLY
918601E
[6]
                   
916663
 
V8 B 440
HI-PERF 440
6-PACK
918602E
[6]
                     

[1] These assemblies fit Chrysler cranks and will accept pulleys, crank triggers, and oil pump drives designed for Chevrolet big block.
[2] Hubs are dimensioned to clear the stock cast-in timing tab. The damper face for pulley mounting will be forward of the OEM location by: .150” for 2-ring internal balance, .450” for 3-ring internal balance, .750” for 3-ring external balance. Hubs may be shortened by the listed amount for internal balance and .600” (.150” fwd of OEM) on external balance if the tab is cleared, or order ATI cover with adjustable tab (part #916259).
2-ring internal balance can be installed in the OEM location with minor clearancing of the timing tab and retain OE timing mark.
[3] Hub has 2 3/16 wide keys at 180O and requires a #916261 spacer which is supplied with the hub. ATI manufactures a one-piece billet hardcoated aluminum pulley (pt # 916263)with the OEM 7-groove serpentine for accessories & an outboard 10 groove serpentine for blower drive.
[4] Part # 916256 has a .600 counterbore, Part # 916257 has .830 counterbore.
[5] Aluminum hub OEM front (part #916255) is OK for 2 ring dampers.
[6] Cannot retain OE location. Must space out accessory pulleys .750”.
[7] For 2 ring shell assembly, use part #918447E.
[8] Part # 918605E is a 2-ring shell assembly.
[9] Supplied with new lightweight aluminum pulley to retain stock belt location.
[10] Specify shell assembly number and #916192 for aluminum hub.
[11] For Paxton Supercharger, add part #SK157C(OEM Paxton size) & SK157C2 (10% OD Paxton) for new aluminum pulley with 7 rib / 8 rib. Retains OEM belt location.
[12] Not an OEM replacement for stock pulley location.
[13] 3/8” pulley bolts in shell, Hub has 5/16”
[14] Passenger timing.
[15] Part #918442E-99 shell is used. 99 Duro rings are used with driver’s side timing.
[16] Customer must cut and reweld the stock timing tab. This damper is OEM location.
[17] 918432 - 5% OD, 918433- 5% UD, 918434 - 4% OD, 918435 - 2% UD, 918436 - 10% OD, 918437 - 17% OD
[18] 918438 - 13% UD use hub #916241, 918439 - 15% UD use hub #916242.
[19] Duralast belt #560K4
[20] Requires shorter belt: Goodyear #4070975


  How to read this chart
  1. Locate the correct manufacturer's chart
  2. Choose the specific engine application listed down the left side of the chart
  3. Determine if the damper needs to be internally or externally balanced ( external balance dampers are constructed of steel only). Black bars that extend horizontally across the entire chart designate these sections
  4. Determine if you need steel or aluminum shells. Labels for this information are listed across the top of the chart in columns 2 and 3.
  5. Once you have determined the shell material, you need to find the outside diameter (OD) of the desired steel or aluminum shell. Then choose between 2 or 3 rings and the desired weight of the damper.
  6. From the far right section of the chart, select either a steel or aluminum hub for your desired engine application. To determine the correct damper assembly part number that intersects is the correct damper assembly.
  7. Assembly part numbers that are color coded correspond to the pulley mount bolt pattern listed near the top of the charts.
 
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