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Dart BBC Aluminum PRO 1 Cylinder Heads w/ Valves
Dart BBC Aluminum Cylinder Heads - Dart Aluminum PRO 1 Cylinder Head with Valves Only (Pair)
PRO1 aluminum big-block cylinder heads deliver "out-of-the-box" airflow that beatsthe competition - at an unbeatable price! Specifically designed forperformance marine engines, PRO 1 heads make Pro Stock airflow technologyaffordable for every big-block owner.
Inspired by our championship-winning Pro Stockdesigns, the PRO 1's race-proven features include rolled valve angles, improvedspark plug location, extra-long intake valves, raised exhaust ports, andfast-burn chambers - yet the PRO 1 can be used with off-the-shelf pistons, valvetrain components, and intake manifolds. You get more power for your moneywith PRO 1.
Using advanced manufacturing techniques, we cast thePRO 1's ports with incredible accuracy. This precision casting technologyduplicates the contours that were previously available only in hand-portedcylinder heads.
PRO 1 big-block heads are available with a choice ofthree different intake port sizes - 310cc, 325cc, and 345cc so you can match therunners to your engines displacement and RPM range perfectly.
- Premium alloy: Dart aluminum heads are cast from virgin 356-T6 aerospace aluminum alloy for superior strength and integrity.
- Bolt on compatibility: 2° rolled valve angle and standard spacing. Accommodates all stock accessories
- Heart-shaped 119cc chambers improve combustion efficiency.
- Raised spark plug location improves flame travel for a quicker, more complete burn - producing more power.
- Multi-angle intake seats and radiused exhaust seats dramatically increase airflow.
- Hardened exhaust seats are compatible with unleaded gasoline.
- Exhaust ports raised .300" to improve flow (requires 1" longer head bolts next to exhaust ports).
- Spark plug holes are machined and gasketed for 3/4" reach plugs.
- Manganese bronze valve guides extend cylinder head life and reduce stem wear.
- As-cast heads are bowl blended on 5-axis CNC machining centers.
- Head Assemblies include heavy-duty marine stainless steel intake valves and inconel exhaust valves.
- NEW Dielectric hardcoat surface treatment protects aluminum cylinder heads against corrosion from saltwater environments.
Final Assemblies Require Parts Kit which includes: Valve springs,retainers, locks, seals, studs & guideplates. (Sold Separately)
Dart Mercury 525, 600, 700 EFI Aluminum PRO 1 Cylinder Heads w/ Valves
Dart Mercury 525, 600, 700 EFI Aluminum PRO 1 Cylinder Heads - with Valves Only (Pair)
Dart machinery has just introduced the ultimate Mercury Racing replacement aluminum cylinder heads for the Mercury Racing 525, 600, and 700EFI engines. These are available in three upgraded intake runner sizes 310CC, 325CC or 345cc ports. All heads have a Dart Marine exclusive chromate finish that provides a superior corrosion resistance extending the life of the heads in a harshest of marine environments. These heads are sold as heads w/valves only or completely assemble with inconel exhaust valves & dual valve springs.
PRO1 aluminum big-block cylinder heads deliver "out-of-the-box" airflow that beatsthe competition - at an unbeatable price! Specifically designed forperformance marine engines, PRO 1 heads make Pro Stock airflow technologyaffordable for every big-block owner.
Inspired by our championship-winning Pro Stockdesigns, the PRO 1 's race-proven features include rolled valve angles, improvedspark plug location, extra-long intake valves, raised exhaust ports, andfast-burn chambers - yet the PRO 1 can be used with off-the-shelf pistons, valvetrain components, and intake manifolds. You get more power for your moneywith PRO 1.
Using advanced manufacturing techniques, we cast the PRO 1's ports with incredible accuracy. This precision casting technologyduplicates the contours that were previously available only in hand-portedcylinder heads.
- Premium alloy: Dart aluminum heads are cast from virgin 356-T6 aerospace aluminum alloy for superior strength and integrity.
- Bolt on compatibility: 2° rolled valve angle and standard spacing. Accommodates all stock accessories
- Heart-shaped 119cc chambers improve combustion efficiency.
- Raised spark plug location improves flame travel for a quicker, more complete burn - producing more power.
- Multi-angle intake seats and radiused exhaust seats dramatically increase airflow.
- Hardened exhaust seats are compatible with unleaded gasoline.
- Exhaust ports raised .300" to improve flow (requires 1" longer head bolts next to exhaust ports).
- Spark plug holes are machined and gasketed for 3/4" reach plugs.
- Manganese bronze valve guides extend cylinder head life and reduce stem wear.
- As-cast heads are bowl blended on 5-axis CNC machining centers.
- Head Assemblies include heavy-duty marine stainless steel intake valves and inconel exhaust valves.
- NEW Dielectric hardcoat surface treatment protects aluminum cylinder heads against corrosion from saltwater environments.
Final Assemblies Require Parts Kit which includes: Valve springs,retainers, locks, seals, studs & guideplates. (Sold Separately)
Dart Mercury 525, 600, 700 EFI Aluminum PRO 1 Cylinder Heads - Assembled
Dart Mercury 525, 600, 700 EFI Aluminum PRO 1 Cylinder Heads - Assembled (Pair)
Dart machinery has just introduced the ultimate Mercury Racing replacement aluminum cylinder heads for the Mercury Racing 525, 600, and 700EFI engines. These are available in three upgraded intake runner sizes 310CC, 325CC or 345cc ports. All heads have a Dart Marine exclusive chromate finish that provides a superior corrosion resistance extending the life of the heads in a harshest of marine environments. These heads are sold as heads w/valves only or completely assemble with inconel exhaust valves & dual valve springs.
Leave it to Dart Machinery to bring a real high performance marine aluminum cylinder head to market. These hard coat anodized marine heads feature a mil-Spec integral surface treatment option which dramatically enhances the corrosion resistance.
These PRO 1’s race-proven cylinder heads include rolled valve angles, improved spark plug location, extra-long severe duty intake valves, raised exhaust ports, fast-burn chambers, an extra lifter valley head bolt feature, 1.550" valve springs, and lastly Inconel exhaust valves and must have in any marine cylinder head. The PRO 1 series of big block cylinder heads can be used with off-the-shelf pistons, valve train components, and performance intake manifolds.
Standard PRO 1 big-block heads are available with a choice of three standard intake port sizes - 310cc, 325cc, and 345cc as well as two new CNC ported race versions. The CNC heads feature the same high quality valves and components but they are NOT hard coated (the coating creates a finish non-conducive to machining). This wide spectrum of options means you don’t have to settle for a one size fits all head. you can match the cylinder head to your engines size and power requirements. Using proprietary "Speed Flow" technology, Dart has produced as-cast ports and chambers which deliver more power and flow than ever before. So if your in the market to add horsepower that only a high quality aluminum head can offer then look no further.
- Premium alloy: Dart aluminum heads are cast from virgin 356-T6 aerospace aluminum alloy for superior strength and integrity.
- Bolt on compatibility: 2° rolled valve angle and standard spacing. Accommodates all stock accessories
- Heart-shaped 119cc chambers improve combustion efficiency.
- Raised spark plug location improves flame travel for a quicker, more complete burn - producing more power.
- Multi-angle intake seats and radiused exhaust seats dramatically increase airflow.
- Hardened exhaust seats are compatible with unleaded gasoline.
- Exhaust ports raised .300" to improve flow (requires 1" longer head bolts next to exhaust ports).
- Spark plug holes are machined and gasketed for 3/4" reach plugs.
- Manganese bronze valve guides extend cylinder head life and reduce stem wear.
- As-cast heads are bowl blended on 5-axis CNC machining centers.
- Head Assemblies include heavy-duty marine stainless steel intake valves and inconel exhaust valves.
- NEW Dielectric hardcoat surface treatment protects aluminum cylinder heads against corrosion from saltwater environments.
Dart BBC Aluminum PRO 1 Cylinder Heads - Assembled
Dart BBC Aluminum Cylinder Heads - Dart Aluminum PRO 1 Cylinder Head - Assembled (Pair)
Leave it to Dart Machinery to bring a real high performance marine aluminum cylinder head to market. These hard coat anodized marine heads feature a mil-Spec integral surface treatment option which dramatically enhances the corrosion resistance.
These PRO 1’s race-proven cylinder heads include rolled valve angles, improved spark plug location, extra-long severe duty intake valves, raised exhaust ports, fast-burn chambers, an extra lifter valley head bolt feature, 1.550" valve springs, and lastly Inconel exhaust valves and must have in any marine cylinder head. The PRO 1 series of big block cylinder heads can be used with off-the-shelf pistons, valve train components, and performance intake manifolds.
Standard PRO 1 big-block heads are available with a choice of three standard intake port sizes - 310cc, 325cc, and 345cc as well as two new CNC ported race versions. The CNC heads feature the same high quality valves and components but they are NOT hard coated (the coating creates a finish non-conducive to machining). This wide spectrum of options means you don’t have to settle for a one size fits all head. you can match the cylinder head to your engines size and power requirements. Using proprietary "Speed Flow" technology, Dart has produced as-cast ports and chambers which deliver more power and flow than ever before. So if your in the market to add horsepower that only a high quality aluminum head can offer then look no further.
- Premium alloy: Dart aluminum heads are cast from virgin 356-T6 aerospace aluminum alloy for superior strength and integrity.
- Bolt on compatibility: 2° rolled valve angle and standard spacing. Accommodates all stock accessories
- Heart-shaped 119cc chambers improve combustion efficiency.
- Raised spark plug location improves flame travel for a quicker, more complete burn - producing more power.
- Multi-angle intake seats and radiused exhaust seats dramatically increase airflow.
- Hardened exhaust seats are compatible with unleaded gasoline.
- Exhaust ports raised .300" to improve flow (requires 1" longer head bolts next to exhaust ports).
- Spark plug holes are machined and gasketed for 3/4" reach plugs.
- Manganese bronze valve guides extend cylinder head life and reduce stem wear.
- As-cast heads are bowl blended on 5-axis CNC machining centers.
- Head Assemblies include heavy-duty marine stainless steel intake valves and inconel exhaust valves.
- NEW Dielectric hardcoat surface treatment protects aluminum cylinder heads against corrosion from saltwater environments.
Clutch & Cam Follower Kit 52-803491T1
Clutch & Cam Follower Kit w/ Non-Ratcheting Clutch replaces MerCruiser part # 52-803491T1
Upper Complete Drive Shaft/Gear Housing Assembly 1547-9412A22
Upper Complete Drive Shaft/Gear Housing Assembly replaces MerCruiser part # 1547-9412A22
For V6 & 470 / 485 with Ratio: 17/19 (1.84/1.81)
Cylinder Housing Kit 77442A1
Cylinder Housing Kit (MC-1 (1970-1980)) replaces MerCruiser part # 77442A1
CLUTCH KIT Mercruiser 52-821930A1
CLUTCH KIT Mercruiser 52-821930A1
Supersedes: 52-821930
8/9.9/13.5/15 (2-STROKE) - 8 | XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - 10 MAGNUM |
XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 15 MARATHON | SEA PRO/MARATHON 15 HP - 15 SEA PRO |
99/15 HP - 15 H.P. (1998) | 8/9.9/13.5/15 (2-STROKE) - 9.9 |
8 BODENSEE 4-STROKE - 8 (BODENSEE) 4-STROKE (International) | XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 10 SEA PRO |
XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 15 SEA PRO | 13.5/15/15 BODENSEE (4-STROKE) - 13.5 (4-STROKE) (International) |
6/8/9.9/15 HP - 8 | XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 10 MARATHON |
9.9/13.5/15 (323CC) 8/9.9/15 BODENSEE 4-STROKE - 15 (4-STROKE) | 9.9/13.5/15 (323CC) 8/9.9/15 BODENSEE 4-STROKE - 8 (BODENSEE) 4-STROKE (International) |
99/15 HP - 9.9 H.P. (1998) | 6/8/9.9/15 HP - 9.9 |
13.5/15/15 BODENSEE (4-STROKE) - 15 (4-STROKE) | SEARS 15 HP (OB MOTOR) W/6.6 GAL. REMOTE TANK - 15 H.P. (1998) W/6.6 GALLON REMOTE TANK |
XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - 10 VIKING | 10/15 SEAPRO/MARATHON-10/15 VIKING (2-STROKE) - 10 MARATHON |
6/8/9.9/15 HP - 6 | 8/9.9/13.5/15 (2-STROKE) - 15 |
9.9/13.5/15 (323CC) 8/9.9/15 BODENSEE 4-STROKE - 13.5 (4-STROKE) (International) | 6/8/9.9/15 HP - 15 |
9.9 /8(BONDENSEE) 4 STROKE - 8 (BODENSEE) 4-STROKE (International) | 6/8/SAILMATE 9.9/SAILPOWER 15 HP - 9.9 |
6/8/SAILMATE 9.9/SAILPOWER 15 HP - 6 | 9.9 /8(BONDENSEE) 4 STROKE - 9.9 (4-STROKE)(232 cc) |
XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - XR10 | 6/8/SAILMATE 9.9/SAILPOWER 15 HP - 8 |
SEA PRO/MARATHON 15 HP - 15 MARATHON | 8/9.9/13.5/15 (2-STROKE) - 6 |
XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - XR10 | SEARS 9.9 HP (OUTBOARD MOTOR) W/6.6 GAL. REMOTE TANK - 9.9 H.P. (1998) W/6.6 GALLON REMOTE TANK |
10/15 SEAPRO/MARATHON-10/15 VIKING (2-STROKE) - 10 VIKING | 6/8/SAILMATE 9.9/SAILPOWER 15 HP - 15 |
9.9/13.5/15 (323CC) 8/9.9/15 BODENSEE 4-STROKE - 9.9 (4-STROKE) (323 cc) | 10/15 SEAPRO/MARATHON-10/15 VIKING (2-STROKE) - 10 SEA PRO |
15 (4-STROKE) - 15 (4-STROKE) | XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - 10 SEA PRO |
XR/MAGNUM 10/SEAPRO/MARATHON 10/SEAPRO/MARATHON 15 - 10 MAGNUM | XR10 AND 10/SEAPRO/MARATHON 10/15/VIKING 10 - 10 MARATHON |
Supercedes: 52-821930
Mercruiser Installer Tool 91-93004A2
Mercruiser Installer Tool 91-93004A2
Used On: 200 (3.0L DFI)(DTS)
200 (3.0L EFI)
200 (DFI)
200 (DFI) 3.0L
200 PRO XS (DFI) 3.0L
225 (3.0L CARB)
225 (3.0L EFI)
225 (3.0L EFI) MARATHON
225 (3.0L EFI) SEAPRO
225 (3.0L-DFI)(DTS)
225 (DFI)
225 (DFI) 3.0L
225 MARATHON (3.0L CARB)
225 SEAPRO (3.0L CARB)
250 (3.0L EFI)
250 (DFI) 3.0L
250 LONG (3.0L)(EFI)
250XB (3.0L EFI)
3.0L EFI MARATHON
3.0L EFI SEAPRO
Supersedes: 91-93004A1
Supercedes: 91-93004A1
Mercruiser Clutch Pin 91-895193002
Mercruiser Clutch Pin 91-895193002
Used On: 8 (4-STROKE)(209cc), 9.9 (4-STROKE)(209cc)
Supersedes: 91-895193
Mercruiser Clutch Pin 91-895193001
Mercruiser Clutch Pin 91-895193001
Used On: 8 (4-STROKE)(209cc), 9.9 (4-STROKE)(209cc)
Supersedes: 91-895194
Mercruiser Guide Tool 91-930051
Mercruiser Guide Tool 91-930051
Used On: 200 (DFI) 3.0L, 200 PRO XS (DFI) 3.0L, 225 (DFI) 3.0L, 250 (DFI) 3.0L