51-A21 #01A192
Loading Schematic
Model Numbers: 51-A21
Click here for a parts breakdown
Extra Details
- Very similar to the B4900.
- Difference in aftercooler design.
- This pump is obsolete, yet many parts are still available.
- If whole pump is needed, order the B4900 on previous page.
- For specs, click on B4900 pump on previous page.
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Aftercooler Gasket, T29S/B4900/NS18S Pumps #048AE2
Price: $15.20Old Part Numbers: 3970200Aftercooler Gasket for T29S. Measures 3-1/8" long by 1-1/8" wide. We recommend ordering the gasket kit, as it will save you money and will ensure that you have all of the...Price: $15.20 -
Intercooler Gasket, T29S #048AD2
Price: $8.36Intercooler gasket for the T29S pump. We recommend ordering the gasket kit, as it will save you money and will ensure that you have all of the head gaskets. We always recommend replacing all head...Price: $8.36 -
B4900 Head Gasket Kit #05BF3E
Price: $191.41B4900 Head Gasket Kit. Kit includes the head gasket, inner valve plate gasket, cylinder gasket, two intercooler gaskets, and discharge tube adapter gasket (total of 6). A little silicone gasket...Price: $191.41 -
Valve Plate Assembly, B4900 Pump #048AA8
Price: $91.59Old Part Numbers: 6210717280Valve plate assembly (includes inner gasket and valves). If air leaks out of the intake filter or if the compressor just isn't performing like it should, order this kit...Price: $91.59 -
T29S / B4900 Air Compressor Gasket Kit #048AE0
Price: $157.89Old Part Numbers: 4950055Complete air compressor gasket kit includes valve plate gaskets, intercooler gaskets, cylinder gasket, base gasket, bearing housing gaskets, and aftercooler gasket. If the...Price: $157.89 -
Cylinder Gasket, B4900 / T29S Pump #048AD8
Price: $45.22We recommend ordering the gasket kit, as it will save you money and will ensure that you have all of the head gaskets. We always recommend replacing all head gaskets at the same time, as the other...Price: $45.22 -
Head Gasket, B4900 / T29S Pump #048AD6
Price: $48.77We recommend ordering the gasket kit, as it will save you money and will ensure that you have all of the head gaskets. We always recommend replacing all head gaskets at the same time, as the other...Price: $48.77 -
Inner Valve Plate Gasket #048B3E
Price: $65.50Gasket valve plate inner gasket for air compressors. Gasket sits between two plates. We recommend ordering the gasket kit, as it will save you money and will ensure that you have all of the head...Price: $65.50 -
Oil Seal, B3000 / B3800 / B3801 / T29S Air Compressor Pumps #05C1B9
Price: $4.75Old Part Numbers: AB-9163010, 046-0217, 9163010, ABP-9163010Crankcase oil seal for B3000, B3800, B3801, T16, and T29S model air compressor pumps. Need oil?Price: $4.75 -
B4900A Air Compressor Pump Rebuild Kit #048AB2
Price: $342.77Old Part Numbers: 2901323156, B4900AOVHLKITAir Compressor Pump Rebuild Kit for B4900A pump, includes complete gasket kit, ring set (for LP and HP pistons), oil seal, and conrod insert bearings. Note:...Price: $342.77 -
Oil Drain Tube, B4900 / T29S Pumps #048B62
Price: $25.95Oil Drain Extension for the B4900 / T29S two-stage pumps. 10mm x 1.50 TPI M10 threadPrice: $25.95 -
Flywheel Bolt, M8 x 30mm, Left-Hand Thread #11668E
Price: $5.13Old Part Numbers: 6211848600Air compressor flywheel bolt, M8 x 30mm left-hand thread.Price: $5.13 -
Price: $21.16 -
Connecting Rod Assy. (incl. 4, Bolt, Nut, Splash) #048AB4
Price: $84.44Old Part Numbers: 047-0064 Connecting rod for either hi or low pressure piston. (Order bearing if needed)Price: $84.44 -
Bearing Insert #048AD0
Price: $48.94Brg. Insert for connecting rod. Qty. 2 Inserts for 1 Rod. If you need to replace Inserts for both rods, then order qty. 4.Price: $48.94 -
Gasket #048B86
Price: $27.28Old Part Numbers: 4950100Torque to 27 lbs. Older gasket may have had 8 bolt holes. The newer gasket now has 12 bolt holes.Price: $27.28 -
Price: $7.36 -
B4900 / T29S Air Compressor Pump Head Kit #048B8A
Price: $252.60Old Part Numbers: 6223018600Head kit for the B4900 / T29S two-stage air compressor pumps. Includes the bare head and head gasket.Price: $252.60 -
Frame Gasket, B4900 / T29S Pump #048B58
Price: $15.58Old Part Numbers: 6231645200Gasket in between the crankcase and the cylinder. B4900/T29S air compressor pumps. If the compressor pump doesn't seem to pressurize as quickly as it should or is leaking...Price: $15.58 -
Hi Pressure Piston #048AB6
Price: $104.48Old Part Numbers: 6222727900Hi pressure piston only. (order wrist pin and retainers below if needed)Price: $104.48 -
Piston Kit, Low-Pressure #116459
Price: $194.66Larger, low-pressure (LP) piston for the B4900 pump.Price: $194.66