OEM Parts
Briggs & Stratton
400000 - 699999 Series
421400 to 421499
Briggs & Stratton 421437-0020-99

Briggs & Stratton 421437-0020-99 Cylinder,Cylinder Heads,Sump

Change Assembly

Diagrams Shown are for U.S. Models

Cylinder,Cylinder Heads,Sump

Prices shown are USD

Ref#

Part

Price

Qty

SEAL, Oil (Magneto Side)

391086 391086S

$5.29

TRAY, Oil Drip

223055

5-1

HEAD, Cylinder (Cylinder 1)

212461 493457

5-2

HEAD, Cylinder (Cylinder 2)

212462 493458

7-2

GASKET, Cylinder Head (Cylinder 2) Included in Gasket Set-Part No. 394501

270983 271868S

$9.41

7-1

GASKET, Cylinder Head (Cylinder 1) Included in Gasket Set-Part No. 394501

270984 271867S

$9.30

8-1

BREATHER ASSEMBLY (#1)

393243 495755

$44.93

8-2

BREATHER ASSEMBLY (Cylinder 2)

393153 495756

GASKET, Rocker Cover Included in Gasket Set-Part No. 394501

27803 27803S

$3.52

SCREW

93394 691666

$3.20

GASKET, Crankcase (1/64) Included in Gasket Set-Part No. 394501

270982 691877

$9.19

GASKET, Crankcase (.005) Included in Gasket Set-Part No. 394501

271145 272127

$9.19

GASKET, Crankcase (.009) Included in Gasket Set-Part No. 394501

271146 272128

$9.30

SCREW (15/16)

93111 691640

$2.99

STUD (15/16)

93772

SCREW (2 5/16) (2-5/16)

93113 690912

$3.09

STUD (Cylinder Head)

93583 691690

15A

PLUG, Oil Drain (Flush) (1/4-18 NPTF) (Flush) (1/4 18 NPTF)

93448 691682

$4.38

PLUG, Oil Drain (3/8)

91084 690946

$4.59

CRANKSHAFT

394430 690768

17A

BEARING, Ball (Magneto Side)

393980

BEARING, Ball (PTO Side)

393741 691358

$50.81

COVER, Crankcase (Plain Bearing)

394309

SEAL, Oil (Crankcase Cover)

291675 291675S

$6.09

SCREW (Fuel Tank) (Tank)

93847 691088

$3.06

KEY, Flywheel (Breaker Ignition)

61760 222698S

$2.30

PISTON ASSEMBLY (Standard)

393271 499956

PISTON ASSEMBLY (.010 Oversize)

393343 499957

PISTON ASSEMBLY (.020 Oversize)

393344 499958

$139.09

PISTON ASSEMBLY (.030 Oversize)

393345 499959

SET, Ring (Standard)

393277

$59.91

SET, Ring (.010 Oversize)

393340

SET, Ring (.020 Oversize)

393341

SET, Ring (.030 Oversize)

393342

LOCK, Piston Pin

260924 691792

$3.52

PIN, Piston (Standard)

299691

$14.01

PIN, Piston (.005 Oversize)

391286

ROD, Connecting (Standard)

394306

$75.96

DIPPER, Connecting Rod

223053 691733

$13.36

WASHER (1/4 X 5/8 X 1/32) (1/4 X 5/8 X 1/32)

220863

$3.20

SCREW

92909 691133

$4.16

VALVE, Exhaust (Includes Retainer(s))

390420 691794

VALVE, Intake Uses: 393606 Seal Assy. and Retainer (Ref. No. 868)

261528 691804

$25.99

SPRING, Valve (Intake)

65906 691605

$5.23

SPRING, Valve (Exhaust)

26828 691597

$8.23

RETAINER, Valve (Valves With Groove In Stem)

221596 690656

RETAINER, Valve (Exhaust Valve) (Exhaust)

292260 691939

$21.92

KEEPER, Valve (2)

93630 494553

$6.09

TAPPET, Valve

261368 691800

$11.12

CAMSHAFT (Used only with Cyl. Hds. 212461 & 212462)

212415 399750

219

GEAR, Governor

394348 793338

$22.08

220

WASHER, Thrust

222773 690412

230

WASHER (1/4 X 5/8 X 1/32) (1/4 X 5/8 X 1/32)

220863

$3.20

244

CONNECTOR, Hose

230318 691764

$11.65

337

PLUG, Spark (Resistor)

394539 796112S

353

WASHER

92791 691077

$2.78

354

NUT (Ground Terminal)

90576 691612

$2.58

356

WIRE, Stop

393035 398808

357

KEY, Drive Pulley (1/4)

91540 691483

$5.46

383

WRENCH, Spark Plug

89838 89838S

$3.87

506

TERMINAL, Ground

231174

507

INSULATOR

280180

$3.59

520

TERMINAL, Ground

93722 691084

$5.08

523

DIPSTICK

394014

$22.99

524

SEAL, O-Ring (Dipstick Tube)

68838 281370S

$7.16

525

TUBE, Dipstick

392782

528

HOSE, Vacuum (Impulse) (9 long-old style) Std 4 1/2 long

393244 791880

552

BUSHING, Governor Crank (Lower)

261559

$6.59

556

SCREW

93783 690359

$6.89

558

WASHER (3/8 X 1/8 X 3/32)

92268

$3.29

568

SUMP, Engine

394391 490918

569

GASKET, Crankcase Included in Gasket Set-Part No. 394501

270981 692287

$8.98

572

GUIDE, Air (Cylinder 2)

222700

601

CLAMP, Hose (Green)

93053 95162S

$1.70

615

RETAINER, E Ring

93851

$3.29

616

CRANK, Governor

394396

634A

SEAL, Governor Shaft (Foam)

271316

$12.94

635

BOOT, Spark Plug

66538 66538S

$3.09

741

GEAR, Timing (Pin)

261363 231321

847

DIPSTICK/TUBE ASSEMBLY

394023

868

SEAL, Valve

393606 692324

869

SEAT, Valve (Intake)

261463 691802

$14.43

870

SEAT, Valve (Exhaust) (Standard)

210940 691844

$16.36