1991 Mercury Grand Marquis Engine Parts
Select Your Submodel
- Engine Assemblies
- Motor Mounts
- Engine Blocks
- Valves & Valvetrain Parts
- Pistons, Rings & Connecting Rods
- Oil Filters
- Serpentine Belts & Auxiliary Drive Belts
- Valve Covers
- Timing Gears, Chains & Covers
- Oil Pans, Drain Plugs & Dipsticks
- Cylinder Heads
- Engine Pulleys
- Engine Sensors, Relays, Switches & Connectors
- Oil Pumps
- Oil Coolers
- Camshafts
- Crankshafts
- Engine Management Systems
- Engine Bearings
- Harmonic Balancers
- Engine Rebuild Kits
- Engine Swap Kits
- Throttle Bodies
- Carburetors
- Motor Oils
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Dayco®Drive Rite™ V-Ribbed Serpentine BeltMercury Grand Marquis 1991, Drive Rite™ V-Ribbed Serpentine Belt by Dayco®. Specially constructed for vehicles that utilize the multiple-belt system, this product features raw-edge construction along with a patented top cogged design,...More flexibility and increased airflow around the belt for prolonged service lifeRaw-edge sidewall construction along with a patented top cogged design for top performance$7.97 - $15.11 - Pioneer Automotive®Harmonic BalancerMercury Grand Marquis 1991, Harmonic Balancer by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$79.07 - $489.16
- Professional Products®Harmonic BalancerMercury Grand Marquis 1991, Harmonic Balancer by Professional Products®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$246.02
- Standard®1/4"x18 Thread Oil Pressure SenderMercury Grand Marquis 1991, 1/4"x18 Thread Oil Pressure Sender by Standard®. With Gauge. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance...Compliant with the strictest standards for qualityExpertly crafted using the up-to-date technology$10.61
- Apex Auto®Timing Cover Gasket SetMercury Grand Marquis 5.0L 1991, Timing Cover Gasket Set by Apex Auto®. Designed utilizing the latest technology, this product features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it...Made with precision and quality in mindDesigned to meet your specific needs$9.18
- Apex Auto®Cylinder Head GasketMercury Grand Marquis 5.0L without High-Performance Engine 1991, Cylinder Head Gasket by Apex Auto®. Designed utilizing the latest technology, this product by Apex Auto features premium quality and will perform better than advertised....Made with precision and quality in mindDesigned to meet your specific needs$11.72
- SKP®Engine Oil PumpMercury Grand Marquis 5.0L 1991, Engine Oil Pump by SKP®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of craftsmanship. Manufactured...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$32.32
- Apex Auto®Rear Crankshaft Seal KitMercury Grand Marquis 5.0L 1991, Rear Crankshaft Seal Kit by Apex Auto®. Designed utilizing the latest technology, this product by Apex Auto features premium quality and will perform better than advertised. Perfect for your vehicle and...Quick accurate delivery with excellent fill-rateExcellent inventory availability$10.13 - $15.86
- Enginetech®Engine ValveMercury Grand Marquis 5.0L 1991, Engine Valve by Enginetech®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$3.21 - $282.40
- Sealed Power®Connecting Rod Bearing SetMercury Grand Marquis 5.0L 1991, Connecting Rod Bearing Set by Sealed Power®. Sealed Power A-Series aluminum-silicon bi-metal alloy engine bearings deliver greater seizure resistance than tri-metal materials, dramatically reducing or...A-Series bi-metal aluminum alloyGreater seizure resistance than tri-metal material$6.45 - $86.26
- Clevite®A-Series Connecting Rod BearingMercury Grand Marquis 5.0L 1991, A-Series Connecting Rod Bearing by Clevite®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$15.23
- Clevite®P-Series Connecting Rod Bearing SetMercury Grand Marquis 5.0L 1991, P-Series Connecting Rod Bearing Set by Clevite®. These are not to be confused with the standard passenger car and light truck parts for the same retention applications which also have a "P" suffix...Expertly crafted from premium materialsDesigned to match rigorous quality standards$47.32
- Dura-Bond®High Performance Camshaft Bearing SetMercury Grand Marquis 1991, High Performance Camshaft Bearing Set by Dura-Bond®. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a well-balanced design and high level of...Rigorously tested to withstand years of abuseHigh-grade materials for long-lasting durability$72.07 - $171.47
- Calico Coatings®H-Series Narrowed Connecting Rod BearingsMercury Grand Marquis 5.0L 1991, H-Series Narrowed Connecting Rod Bearings by Calico Coatings®. Bearings are coated with our CT-1 Dry Film Lubricant coating. This coating helps reduce friction and abrasive wear. It provides intermittent...Corrosion protectionIncreased lubricity$22.07 - $22.89
- Dorman HD Solutions®Idler PulleyMercury Grand Marquis 5.0L 1991, Idler Pulley by Dorman HD Solutions®. This replacement accessory drive belt idler pulley has been engineered to match the function and performance of the original pulley on select vehicle years, makes...Direct replacement - this accessory drive belt idler pulley matches the fit and function of the original equipment pulley on specified vehiclesRestores performance - fixes a failed, squealing or groaning noise from a worn idler pulley$17.87
- Pioneer Automotive®Engine Oil Drain PlugMercury Grand Marquis 5.0L 1991, Engine Oil Drain Plug by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for...Made to deliver reliable service for a long timeRugged construction to withstand harsh conditions$4.37 - $10.49
- ATP®Graywerks Engine Oil PanMercury Grand Marquis 5.0L 1991, Graywerks Engine Oil Pan by ATP®. ATP Graywerks Oil Pans are a high quality OE replacement alternative. All pans are developed to originally specified designs, with oil capacity and baffles as required...Heavy gauge materials provide superior pan durability and resistance to warpingHigh-Temp powder coating resists corrosion and ensures a long-lasting replacement (on originally painted steel pans)$74.90 - $80.42
- DIY Solutions®Engine Oil Drain PlugMercury Grand Marquis 1991, Engine Oil Drain Plug by DIY Solutions®. If you're seeking to get your steel stallion back to its tip-top condition, then this top-notch replacement solution is what you should definitely look out for. When...Designed to help restore your vehicle to its former gloryQuick replacement to let you enjoy an awesome ride again$10.15
- Replace®Engine Oil PanMercury Grand Marquis 1991, Engine Oil Pan by Replace®. Stop oil leaks and keep your engine operating at its best with this superior Engine Oil Pan. Replace your worn out or cracked oil pan with this product to prevent damage to your...Direct replacementMeets or exceeds OE standards$90.81 - $128.34
- Agility®Engine Oil PanMercury Grand Marquis 5.0L with Steel Oil Pan 1991, Engine Oil Pan by Agility®. Agility products have gone through extensive development and testing to insure the products they sell to meet the expectations of their customers and market...Meets or exceeds OE manufacturer's specifications100% performance and fit-tested$38.55 - $43.54
- Professional Products®Powerforce+Plus™ Harmonic BalancerMercury Grand Marquis 1991, Powerforce+Plus™ Harmonic Balancer by Professional Products®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality,...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$165.23
- Autotecnica®Harmonic BalancerMercury Grand Marquis 5.0L 1991, Harmonic Balancer by Autotecnica®. This superior part by Autotecnica is a great alternative solution to the costly factory equipment that will help you restore smooth and efficient operation of your...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$61.88
- Pro-Race®Pro Street Harmonic DamperMercury Grand Marquis 5.0L 1991, Pro Street Harmonic Damper by Pro-Race®. Nodular Iron, also referred to as ductile iron, is typically the material used for heavy duty or racing applications of cast iron products. It is approximately...Nodular Iron Construction – Most cast dampers are manufactured from gray iron castings. Nodular iron is over 30% stronger than gray iron.Bonded Elastomer – Outer ring and inner hub are bonded (vulcanized) to the elastomer. This minimizes the potential for the outer ring to move on the hub, losing true TDC position.$135.89 - $141.05
- Facet®Oil Pressure SwitchMercury Grand Marquis 5.0L 1991, Oil Pressure Switch by Facet®. The function of the ignition system of a motor vehicle engine is to induce the combustion of the fuel. In internal combustion engines with positive ignition (petrol...The reliable goods for increase of reliability of the carQuality equal, if not superior, to that of the original components$6.13
- Cloyes®Center OE Heavy Duty Timing ChainMercury Grand Marquis 5.0L 1991, Center OE Heavy Duty Timing Chain by Cloyes®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...Perfect for upgrading your fuel injection systemMade with the use of the highest quality materials$13.28
- Cloyes®Front Cast Camshaft SprocketMercury Grand Marquis 5.0L 1991, Front Cast Camshaft Sprocket by Cloyes®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and...Made with precision and quality in mindDesigned to meet your specific needs$8.52
- Pioneer Automotive®Aluminum Timing CoverMercury Grand Marquis 5.0L 1991, Aluminum Timing Cover by Pioneer Automotive®. Designed utilizing the latest technology, this product by Pioneer Automotive features premium quality and will perform better than advertised. Perfect for...Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle$104.71
- Hayden®Ultra-Cool™ Oil Cooler KitMercury Grand Marquis 1991, Ultra-Cool™ Oil Cooler Kit by Hayden®. Protect your vehicle and save on costly engine repairs with this product. With the Ultra-Cool™ Engine Oil Cooler Kit by Hayden, you will be able to reduce high oil...Made of quality materialsTurbulators in every tube ensure efficient cooling$99.84
- Derale Performance®Series 10000™ Stack Plate CoolerMercury Grand Marquis 1991, Series 10000™ Stack Plate Cooler by Derale Performance®. Our most efficient heat exchanger, the all aluminum 10 row Stacked Plate cooler features sturdy furnace brazed construction, full 2" deep...Designed for engine and transmission coolingMost efficient heat exchangers available$107.37
- Enginetech®Engine Piston Ring SetMercury Grand Marquis 5.0L 1991, Engine Piston Ring Set by Enginetech®. Superior size and weight grading within each set. Most Enginetech pistons are decked 0.010" to 0.020" to compensate for oversized bores and head/deck milling....Rigorously tested to withstand years of abuseDesigned with innovative manufacturing techniques$48.05
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