Home > Airhead > Compounds, Tools & Fasteners > Fasteners >

Exhaust Nut 50mm - BMW Airhead; 18 21 1 234 721 / EnDuraLast
18 21 1 234 721, 18211234721, exhaust nut, bmw nut tool, bmw , bmw exhaust nut , bmw airhead exhaust, r65 exhaust nut, bmw exhaust nut, airhead nut exhaust nut, exhaust nut, exhaust nut r100, bmw exhaust nut , airhead exhaust nut , finned exhaust nut , s
 
Alternative Views:
Part #: EXNut721

New Aluminum 50mm Exhaust Nut for 38mm headers - purchase two for a matching set.

Vehicle Manufacturer: BMW
Application: BMW Airhead Models
Make / Model: BMW R60, R75, R80, R100
Model Years: 1976 - 1995
Manufacturer Part # 18 21 1 234 721

(See APPLICATION TABLE tab BELOW to verify vehicle fitment)


Brand:
BMW List Price $40.26
USD Price $31.50

Quantity in Stock:117

Part #: EXNUT721
Quantity:

Description
 		Application Table
 
Replace your old worn or damaged exhaust nuts with a classy new looking part!

Use an exhaust nut wrench to loosen and tighten these nuts otherwise you may damage the fins - see Part No EXNut-Wrench758

Do NOT install new nut without first applying copper (not silver) anti-seize on the thread - see our Part No: LOC8008.
NOTE: Exhaust nuts must be spun off every 10,000 miles during a major service for application of antiseize.

When struggling to remove seized nuts, heat them up to 300degF to loosen them.

In extreme cases you may have to cut the nut off being careful not to damaged the thread on the cylinder head.The nut can be cut off with a hack saw or dremel. Cut the nut and only saw down "to the threads" of the head. Now hit a chisel in the cut to try separate the two pieces. If this does not work, then make a second cut on the opposite side of the and use the chisel to separate the nut from the cylinder head.
Installation Tips - Courtesy Brook Reams

Related Products
Exhaust Clamp Ring 38mm - BMW Airhead; 18 21 1 230 586 / EnDuraLast Exhaust Clamp Ring 38mm - BMW Airhead; 18 21 1 230 585 / EnDuraLast Exhaust Nut 45mm - BMW Airhead R45 & R65; 18 21 1 335 595 / EnDuraLast Exhaust Nut Removal / Installing Wrench - BMW Airhead; 83 30 0 401 758 / EnDuraLast
USD Price $11.99

Add
USD Price $7.99

Add
USD Price $19.99

Add
USD Price $20.00

Add
18 21 1 230 586,18 21 1 230 586,18 21 1 230 585, 18211230585,18 11 1 230 433,18 11 1 230 434,18111230433,18111230434,exhaust clamp ring,bmw,bmw exhaust manifold ring,bmw airhead exhaust,airhead exhaust manifold ring,R50 clamp ring,R60 clamp ring,R75 clamp  18 21 1 230 585, 18211230585,18 11 1 230 433,18 11 1 230 434,18111230433,18111230434,exhaust pressure ring,bmw,bmw exhaust manifold ring,bmw airhead exhaust,airhead exhaust manifold ring,R50 pressure ring,R60 pressure ring,R75 pressure ring,R80 pressure 18 21 1 335 595, 18211335595. exhaust nut, bmw nut tool, bmw , bmw exhaust nut , bmw airhead exhaust, r65 exhaust nut, bmw exhaust nut, airhead nut exhaust nut , r65 exhaust nut, exhaust nut tool, bmw exhaust , airhead exhaust nut , finned exhaust nut , 83 30 0 401 758, 83300401758, exhaust wrench, nut wrench, bmw nut removal tool, bmw wrench, bmw exhaust nut wrench, wrench for bmw airhead exhaust, r100 wrench, r80 wrench, r65 wrench, r75 wrench, nut removal tool, bmw wrench, airhead nut wrench
Exhaust Nut Thread Cutting Tool 52mm - BMW Airhead, 18 21 1 234 721, 18 11 4 090 270 / EnDuraLast
BUY NOW $109.99

Add
18 21 1 234 721, 18 11 4 090 270,18211234721,18114090270,R50 exhaust thread cutting tool,R60 exhaust thread cutting tool,R75 exhaust thread cutting tool,R80 exhaust thread cutting tool,R90 exhaust thread cutting tool,R100 exhaust thread cutting tool