Availability
Bare Blocks, Dart Big M Sportsman Series, Cast Iron,9.800 in. Deck Height, 4.560 in,Bore,4-Bolt Main,2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31223544
Not Yet Reviewed
Estimated Ship Date: Feb 5, 2026 if ordered today
Estimated Ship Date: Feb 5, 2026 if ordered today
S&S Cycle 92-99 BT w/ 4in Bore Special Application Crankcase - Natural
Part Number: SSY-31-0047
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
S&S Cycle 84-91 BT w/ Stock Bore Super Stock Alternator Style Crankcase - Wrinkle Black
Part Number: SSY-31-0052
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
S&S Cycle 92-99 BT w/ Stock Bore Super Stock Alternator Syle Crankcase - Wrinkle Black
Part Number: SSY-31-0055
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
S&S Cycle 07-16 BT Engines w/ Stock Bore Super Stock T2 Crankcase - Wrinkle Black
Part Number: SSY-310-0367A
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
S&S Cycle 84-91 BT w/ 3-5/8in Bore Super Stock Alternator Style Crankcase - Natural
Part Number: SSY-31-0001
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
S&S Cycle 2017+ M8 Touring Models MK-Series Touring Crankcase Assembly - Black
Part Number: SSY-310-1170
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
S&S Cycle 99-06 BT Crankcase Assembly
Part Number: SSY-106-4057A
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
S&S Cycle 99-06 BT 4-18in Bore Crankcase - Silver
Part Number: SSY-106-4043A
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
S&S Cycle 99-06 Twin Cam 88 A Engines 4-1/8in Bore Stock Stud Pattern Crankcase - Wrinkle Black
Part Number: SSY-31-0181A
Not Yet Reviewed
Estimated Ship Date: Jan 2, 2026 if ordered today
Estimated Ship Date: Jan 2, 2026 if ordered today
CYL SLEEVE ASSEMBLY
Part Number: CLE-2261977
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
CYL SLEEVE ASSEMBLY
Part Number: CLE-2261976
Not Yet Reviewed
Estimated Ship Date: Jan 26, 2026 if ordered today
Estimated Ship Date: Jan 26, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron, 9.800 in. Deck Height, 4.250 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213345
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron, 10.200 in. Deck Height, 4.250 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213355
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron,10.400 in. Deck Height, 4.250 in,Bore,4-Bolt Main,2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213395
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron, 9.80 in. Deck Height, 4.250 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213445
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron, 10.200 in. Deck Height, 4.500 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213455
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron, 9.800 in. Deck Height, 4.560 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213545
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron,10.400 in. Deck Height, 4.500 in,Bore,4-Bolt Main,2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213595
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron, 9.800 in. Deck Height, 4.600 in. Bore, 4-Bolt Main, 2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213645
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Engine Block, Cast Iron, 4-Bolt Mains, 4.600 in. Diameter Bore, 2-Piece Rear Main Seal, Chevy, Big Block, Each
Part Number: DRT-31213655
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Bare Blocks, Dart Big M Series, Cast Iron,10.400 in. Deck Height, 4.600 in,Bore,4-Bolt Main,2-Piece Rear Main Seal, Big Block, Chevy, Each
Part Number: DRT-31213695
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
SBF Ir/Blk PRO Ford 8.200x4.000"x302"
Part Number: DRT-31394176
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
SBF Ir/Blk PRO Ford 8.200x4.125"x302"
Part Number: DRT-31394276
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
SBF Ir/Blk PRO Ford 9.5x4.000"xcleve"
Part Number: DRT-31395136
Not Yet Reviewed
Estimated Ship Date: Feb 9, 2026 if ordered today
Estimated Ship Date: Feb 9, 2026 if ordered today
Modal Header
Call To Order
This is a custom order part. You can order this part by Contacting Us.