MOROSO
Moroso Performance Parts at JJ Motorsports
Moroso is a pioneering name in the automotive performance industry, established in 1968 by George Moroso. With a deep-rooted passion for motorsports, the company has become a leading manufacturer of high-performance parts for racing and street applications. Over five decades, Moroso has been dedicated to delivering innovative and quality solutions to car enthusiasts and professional racers, cementing its reputation as a trusted brand in the automotive world.
At JJ Motorsports, we offer a wide selection of Moroso products to enhance your vehicle's performance. Popular items include the SB Chevy V. C. Gaskets 93020, featuring Perm-Align design with a steel core for durability and silicone rubber for sealing, the Reusable Filter 14x5 Shield 65947 made from foam to protect against dust, and the Throttle Return Springs Stainless Steel Pair 64929 for reliable operation in high-performance vehicles. Other favorites are the SB Alum Water Pump 63500 with a low drag impeller and reinforced housing, the SBC C/T Sportsman Series Oil Pan 21308 offering trap door baffles for superior oil control, and the SBC Valve Cover Set w/ Oilers Non-Logoed 68360 constructed from fabricated aluminum for strength.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Moroso 3/8 in NPT Male to 3/8 in Hose Barb 90 Degree Brass Fuel Fitting 65140
MOROSO
$25.99Fuel system reliability depends on secure, leak-free connections—and a quality adapter fitting is non-negotiable. The Moroso 3/8" NPT-to-hose-barb 90-degree brass fitting solves the common challenge...MOR65140- SKU:
- MOR65140
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MFG Part #:
- 65140
$25.99 -
Moroso Holley Throttle Stop 65042
MOROSO
$49.99Precise idle control is essential for consistent carburator performance, whether you're tuning on the dyno or dialing in street-strip applications. The Moroso Holley Throttle Stop gives you...MOR65042- SKU:
- MOR65042
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- MFG Part #:
- 65042
$49.99 -
Moroso 1/2in Wood Carb Spacer 65015
MOROSO
$54.99A carburetor spacer is a critical component for optimizing fuel distribution and tuning flexibility in your engine's induction system. The Moroso 1/2in wood spacer provides thermal isolation between...MOR65015- SKU:
- MOR65015
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- MFG Part #:
- 65015
$54.99 -
Moroso 1/2in Billet Carb Spacer 64985
MOROSO
$70.99A quality carburetor spacer is essential for optimizing your intake manifold's air velocity and improving fuel atomization—directly impacting throttle response and overall engine efficiency. The...MOR64985- SKU:
- MOR64985
- Availability:
- Ships Same Business Day
- Weight:
- 0.97 LBS
- MFG Part #:
- 64985
$70.99 -
Moroso 1in Billet Carb Spacer 64981
MOROSO
$98.99A carburetor spacer is essential for optimizing fuel distribution, improving engine response, and lowering under-hood temperatures. The Moroso 1-inch billet spacer provides a precision-engineered...MOR64981- SKU:
- MOR64981
- Availability:
- Ships Same Business Day
- Weight:
- 1.68 LBS
- MFG Part #:
- 64981
$98.99 -
Moroso 1in Alum. Carb. Spacer 64980
MOROSO
$82.99A carburetor spacer is a straightforward way to improve intake manifold sealing and optimize fuel distribution across your engine's cylinders. The Moroso 1-inch aluminum spacer adds thermal isolation...MOR64980- SKU:
- MOR64980
- Availability:
- Ships Same Business Day
- Weight:
- 1.73 LBS
- MFG Part #:
- 64980
$82.99 -
Moroso 2in Alum. Carb. Spacer 64970
MOROSO
$103.99A carburetor spacer creates critical distance between your carb and intake manifold, allowing for improved airflow dynamics and more consistent fuel atomization across all cylinders. The Moroso...MOR64970- SKU:
- MOR64970
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- MFG Part #:
- 64970
$103.99 -
Moroso Phenolic 1/2in 4 Hole 64943
MOROSO
$57.99A quality carburetor spacer does more than fill a gap—it optimizes fuel atomization, improves heat management, and can deliver measurable gains in throttle response and mid-range torque. The Moroso...MOR64943- SKU:
- MOR64943
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- MFG Part #:
- 64943
$57.99 -
Moroso Phenolic 1in Open 64940
MOROSO
$56.99Phenolic carburetor spacers are essential for serious carbureted builds—they provide thermal insulation that keeps fuel cooler and reduces vapor lock while maintaining consistent jetting performance...MOR64940- SKU:
- MOR64940
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- MFG Part #:
- 64940
$56.99 -
Moroso Phenolic 1in 4 Hole 64930
MOROSO
$62.99A quality carburetor spacer is essential for optimizing fuel distribution, reducing heat transfer to the intake manifold, and maintaining consistent air-fuel ratios under sustained performance...MOR64930- SKU:
- MOR64930
- Availability:
- Ships Same Business Day
- Weight:
- 1.52 LBS
- MFG Part #:
- 64930
$62.99 -
Moroso throttle return spring kit for Holley 2300 2305 4150 4160 carburetors 64927
MOROSO
$41.99A properly functioning throttle return spring is critical for predictable throttle control and engine response, especially in competition settings where milliseconds matter. The Moroso Throttle...MOR64927- SKU:
- MOR64927
- Availability:
- Ships Same Business Day
- Weight:
- 0.49 LBS
- MFG Part #:
- 64927
$41.99 -
Moroso throttle return spring kit for Holley 2 or 4 bbl single carb applications 64925
MOROSO
$34.99A positive throttle return isn't optional—it's essential for consistent carburetor performance and safety compliance at the track. The Moroso throttle return spring kit delivers reliable, repeatable...MOR64925- SKU:
- MOR64925
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
- MFG Part #:
- 64925
$34.99 -
Moroso Carb Linkage Bushing Kit 64920
MOROSO
$16.99Throttle linkage wear is one of the most overlooked causes of sluggish throttle response and inconsistent idle quality in carbureted engines. The Moroso Carb Linkage Bushing Kit 64920 replaces worn...MOR64920- SKU:
- MOR64920
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 64920
$16.99 -
Moroso Throttle Return Spring Kit for 4150 Holley Carburetors 64919
MOROSO
$60.99A worn or inconsistent throttle return spring can leave you stranded on the track or street—causing sluggish throttle response, hanging RPMs, or unpredictable idle conditions. The Moroso Throttle...MOR64919- SKU:
- MOR64919
- Availability:
- Ships Same Business Day
- Weight:
- 0.62 LBS
- MFG Part #:
- 64919
$60.99 -
Moroso throttle return springs 4-pack 2.5" and 2.75" lengths for Holley carburetors 64917
MOROSO
$13.99A worn or missing throttle return spring compromises carburetor response and can create unsafe idle conditions. The Moroso Throttle Return Springs 4-Pack delivers consistent tension across Holley...MOR64917- SKU:
- MOR64917
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- 64917
$13.99 -
Moroso GM/Ford Alternator Pulle 64800
MOROSO
$56.99A quality alternator pulley is critical for reliable charging system performance, especially under high-RPM conditions where belt slippage can compromise electrical output. The Moroso GM/Ford...MOR64800- SKU:
- MOR64800
- Availability:
- Ships Same Business Day
- Weight:
- 0.98 LBS
- MFG Part #:
- 64800
$56.99 -
Moroso Double Groove Crnk Pulle 64110
MOROSO
$96.99A reliable crankshaft pulley is essential for proper belt drive system operation and engine accessory performance. The Moroso Double Groove Crank Pulley delivers the precision fitment and durability...MOR64110- SKU:
- MOR64110
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- MFG Part #:
- 64110
$96.99Qty in Cart: 0Quantity:Price:$96.99Subtotal: -
Moroso Double Groove Crnk Pulle 64060
MOROSO
$84.99A quality crankshaft pulley is essential for reliable belt drive performance and proper accessory synchronization on small block Chevy engines. The Moroso Double Groove design delivers consistent...MOR64060- SKU:
- MOR64060
- Availability:
- Ships Same Business Day
- Weight:
- 1.76 LBS
- MFG Part #:
- 64060
$84.99Qty in Cart: 0Quantity:Price:$84.99Subtotal: -
Moroso Single Groove Crnk Pulle 64050
MOROSO
$57.99A properly functioning crankshaft pulley is critical to engine accessory drive efficiency and overall reliability. The Moroso Single Groove Crankshaft Pulley delivers consistent power transmission to...MOR64050- SKU:
- MOR64050
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- MFG Part #:
- 64050
$57.99 -
Moroso Water Pump Pulley Shim K 64035
MOROSO
$16.99Proper belt alignment and tensioning are critical to preventing premature wear on your water pump and serpentine belt system. The Moroso Water Pump Pulley Shim K compensates for manufacturing...MOR64035- SKU:
- MOR64035
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MFG Part #:
- 64035
$16.99 -
Moroso Coolant Expansion Tank Universal w/Sight Tube 63773
MOROSO
$195.99A quality coolant recovery tank is essential for maintaining proper coolant levels and preventing air from entering your cooling system—both critical for engine reliability under sustained...MOR63773- SKU:
- MOR63773
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- MFG Part #:
- 63773
$195.99Qty in Cart: 0Quantity:Price:$195.99Subtotal: -
Moroso Univ Coolant Expasion Overflow Tank Dual Style 63772
MOROSO
$282.99A quality coolant recovery system prevents air from entering your cooling circuit, which maintains proper coolant flow and prevents cavitation damage to your water pump. The Moroso dual-style...MOR63772- SKU:
- MOR63772
- Availability:
- Ships Same Business Day
- Weight:
- 3.60 LBS
- MFG Part #:
- 63772
$282.99 -
Moroso Radiator Hose Filler 1.25in Hose To 1.25in Ho 63745
MOROSO
$48.99A quality radiator filler neck is critical for maintaining system integrity and preventing coolant loss during high-performance operation. The Moroso 63745 offers a direct, aluminum construction...MOR63745- SKU:
- MOR63745
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MFG Part #:
- 63745
$48.99 -
Moroso Radiator Hose Filler 1.5in Hose To 1.5in Hose 63730
MOROSO
$48.99A quality radiator hose filler neck is essential for reliable coolant circulation and system integrity in high-performance applications. The Moroso 63730 provides a durable aluminum transition point...MOR63730- SKU:
- MOR63730
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- MFG Part #:
- 63730
$48.99 -
Moroso Exp.Tank 1qt. 63657
MOROSO
$51.99A quality coolant recovery tank is essential for maintaining proper fluid levels and preventing air from entering your cooling system—both critical for engine longevity and consistent performance...MOR63657- SKU:
- MOR63657
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- MFG Part #:
- 63657
$51.99 -
Moroso 1 Qt Expansion Tank 63656
MOROSO
$190.99A quality expansion tank is critical for maintaining stable coolant levels and preventing air pockets in your cooling system—issues that can compromise engine performance and longevity. The Moroso 1...MOR63656- SKU:
- MOR63656
- Availability:
- Ships Same Business Day
- Weight:
- 1.28 LBS
- MFG Part #:
- 63656
$190.99 -
Moroso Cool Sys Expansion Tank 63655
MOROSO
$158.99A properly functioning coolant recovery system is essential for maintaining optimal engine temperatures and preventing costly overheating damage. The Moroso Cool Sys Expansion Tank captures displaced...MOR63655- SKU:
- MOR63655
- Availability:
- Ships Same Business Day
- Weight:
- 1.23 LBS
- MFG Part #:
- 63655
$158.99 -
Moroso 1.5 Qt Expansion Tank 63651
MOROSO
$167.99A quality expansion tank is critical for maintaining stable coolant levels and preventing air pockets that compromise cooling efficiency—especially under sustained high-performance driving. The...MOR63651- SKU:
- MOR63651
- Availability:
- Ships Same Business Day
- Weight:
- 1.37 LBS
- MFG Part #:
- 63651
$167.99 -
Moroso Temp Gauge Fitting 63645
MOROSO
$22.99If you're running a custom cooling system or relocating your temperature sensor, you need a reliable adapter that won't leak or fail under pressure. The Moroso Temp Gauge Fitting 63645 provides a...MOR63645- SKU:
- MOR63645
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- 63645
$22.99 -
Moroso SB Water Pump Spacer 63510
MOROSO
$66.99A water pump spacer is essential for fine-tuning your cooling system's geometry and optimizing flow dynamics on small block Chevy engines. This Moroso spacer allows you to dial in proper belt tension...MOR63510- SKU:
- MOR63510
- Availability:
- Ships Same Business Day
- Weight:
- 1.23 LBS
- MFG Part #:
- 63510
$66.99Qty in Cart: 0Quantity:Price:$66.99Subtotal: -
Moroso Filler Neck 63486
MOROSO
$55.99A quality fuel filler neck is essential for reliable fueling, proper ventilation, and a clean engine bay aesthetic. The Moroso 63486 delivers a straightforward, durable solution with billet aluminum...MOR63486- SKU:
- MOR63486
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- MFG Part #:
- 63486
$55.99 -
Moroso Weld-In Alum Filler Neck 63485
MOROSO
$35.99A quality fuel filler neck is foundational to any clean, functional fuel system—whether you're building a custom hot rod, fabricating a race car, or restoring a classic. This Moroso weld-in aluminum...MOR63485- SKU:
- MOR63485
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MFG Part #:
- 63485
$35.99Qty in Cart: 0Quantity:Price:$35.99Subtotal: -
Moroso Filler Neck Block-Off Plate 63471
MOROSO
$21.99When you're running a custom cooling system or upgrading your engine bay, a factory filler neck becomes unnecessary bulk. The Moroso Filler Neck Block-Off Plate eliminates this obstruction while...MOR63471- SKU:
- MOR63471
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- MFG Part #:
- 63471
$21.99 -
Moroso Billet Filler Neck - Black 63468
MOROSO
$84.99A quality filler neck is essential for reliable coolant system management, and a billet aluminum construction ensures durability under high-heat engine conditions. The Moroso Billet Filler Neck...MOR63468- SKU:
- MOR63468
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- MFG Part #:
- 63468
$84.99 -
Moroso Filler Neck 63466
MOROSO
$71.99A stock filler neck is often the first casualty in a high-performance build—corroded, cracked, or simply inadequate for custom cooling systems. The Moroso 63466 replaces it with a heavy-duty billet...MOR63466- SKU:
- MOR63466
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
- MFG Part #:
- 63466
$71.99 -
Moroso Water Outlet Filler Neck 63465
MOROSO
$47.99A quality water outlet filler neck is essential for maintaining proper coolant circulation and preventing air pockets in your cooling system—both critical for sustained engine performance and...MOR63465- SKU:
- MOR63465
- Availability:
- Ships Same Business Day
- Weight:
- 0.27 LBS
- MFG Part #:
- 63465
$47.99 -
Moroso #16AN Billet Filler Neck 3/8in NPT Female Ports 63461
MOROSO
$104.99A quality filler neck is the foundation of any reliable cooling system—this billet aluminum manifold gives you the precision fitment and dual NPT ports you need to integrate aftermarket gauges,...MOR63461- SKU:
- MOR63461
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
- MFG Part #:
- 63461
$104.99 -
Moroso SBF Bolt-On Alum. Water Outlet Neck w/-16an Ftng 63455
MOROSO
$54.99A quality water outlet neck is critical for reliable coolant flow and leak-free operation in high-performance Small Block Ford engines. This Moroso billet aluminum neck provides a direct bolt-on...MOR63455- SKU:
- MOR63455
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- MFG Part #:
- 63455
$54.99 -
Moroso Water Outlet Restrictors 63440
MOROSO
$19.99Engine cooling efficiency depends on proper coolant flow management, and restrictors are essential for maintaining optimal operating temperatures under load. By controlling water outlet pressure,...MOR63440- SKU:
- MOR63440
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 63440
$19.99 -
Moroso Chevy V8 Water Neck Bleeder Plate 63432
MOROSO
$47.99Air pockets trapped in your cooling system will compromise thermostat accuracy and cause localized hot spots that can lead to catastrophic engine failure. The Moroso Chevy V8 Water Neck Bleeder Plate...MOR63432- SKU:
- MOR63432
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- MFG Part #:
- 63432
$47.99
