MERCURY 668631 Screw (.375-16 X 2.500) | PalmerPower
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MERCURY 668631 Screw, Cylinder Head (2-1/2")

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$1.90
SKU:
668631
Schematic Object Key:
3

MERCURY 668631 Screw, Cylinder Head (2-1/2")

$1.90

Disclaimer: Please note that the items featured in the image (schematic diagram) are not sold as a bundled set. To facilitate your search, kindly refer to the schematic object key provided below in order to locate a specific item within the image.

MERCURY 668631 Screw, Cylinder Head (2-1/2")

Schematic Object Key : 3

Product Description : MERCURY 668631 Screw, Cylinder Head (2-1/2")

Product Category : V-225/ 5628028 AND UP/ Reed Block And Cylinder Head

Disclaimer: Each item listed in the table below is available for individual purchase and is not sold as part of a package or set.

Other Components:

Key Name Part No.
1 CYLINDER HEAD 95095
2 GASKET, CYLINDER HEAD 41244T02
3 SCREW, CYLINDER HEAD (2-1/2") 668631
4 COVER ASSEMBLY, CYLINDER 7270A 1
5 GASKET, CYLINDER COVER 65788
6 SCREW, CYLINDER COVER (1-1/4") 74824
7 "J" CLIP, CYLINDER COVER SCREW 47483
8 THERMOSTAT 75692
9 GASKET, THERMOSTAT 62386001
10 COVER, THERMOSTAT 90390A 1
11 SCREW, THERMOSTAT COVER (2"- FLANGE HEAD) 66023
11 SCREW, THERMOSTAT COVER (2") 815549
11 SCREW, THERMOSTAT COVER (1") 35386
12 FITTING, THERMOSTAT COVER TO WATER HOSES 68728
13 HOSE, WATER DISTRIBUTION (10" AND 14") 77653101
14 FITTING, ELBOW - WATER HOSES 687271
15 STA-STRAP, WATER HOSES 61990
16 TEMPERATURE SENDER 78799
18 COVER, TEMPERATURE SENDER 78286
19 TERMINAL BLOCK 45915
20 SCREW 69079
21 SCREW, LEADS TO TERMINAL BLOCK (3/8") 69079
22 HOUSING, REED BLOCK (7/8") 87628F2
24 GASKET, REED BLOCK HOUSING 127754
25 REED BLOCK 87692
26 REED ASSEMBLY 19719A1
27 REED STOP 903911
28 SCREW 57583T
29 STUD, CARBURETOR MOUNTING 270372
30 CHECK VALVE, BLEED HOSE (STRAIGHT) 426585
31 ELBOW, BLEED H OSE (PRESS IN) 15133
32 TEE, BLEED HOSE 59169003
33 FITTING, BLEED HOSE (PRESS IN) 56759
34 HOSE, BLEED 9938779
35 ELBOW, REED BLOCK (45 DEG.) 782792
36 ELBOW, REED BLOCK (90 DEG.) 996642
37 TEE, REED BLOCK 8585531
38 HOSE, REED BLOCK (2-3/4"-4") 78892 14
39 FITTING, PULSE HOSE 54090
40 HOSE, PULSE (6-3/4") 90729 25
41 CHECK VALVE, BLEED HOSE (PRESS-IN) 426233
42 ELBOW, REED BLOCK (WITH 1/16" BARB) - 90 DEG. 93890
43 TEE, REED BLOCK (WITH 1/16" BARB) 93891
- GASKET SET 89221A80
1 CYLINDER HEAD 95095
2 GASKET, CYLINDER HEAD 41244T02
3 SCREW, CYLINDER HEAD (2-1/2") 668631
4 COVER ASSEMBLY, CYLINDER 7270A 1
5 GASKET, CYLINDER COVER 65788
6 SCREW, CYLINDER COVER (1-1/4") 74824
7 "J" CLIP, CYLINDER COVER SCREW 47483
8 THERMOSTAT 75692
9 GASKET, THERMOSTAT 62386001
10 COVER, THERMOSTAT 90390A 1
11 SCREW, THERMOSTAT COVER (2"- FLANGE HEAD) 66023
11 SCREW, THERMOSTAT COVER (2") 815549
11 SCREW, THERMOSTAT COVER (1") 35386
12 FITTING, THERMOSTAT COVER TO WATER HOSES 68728
13 HOSE, WATER DISTRIBUTION (10" AND 14") 77653101
14 FITTING, ELBOW - WATER HOSES 687271
15 STA-STRAP, WATER HOSES 61990
16 TEMPERATURE SENDER 78799
18 COVER, TEMPERATURE SENDER 78286
19 TERMINAL BLOCK 45915
20 SCREW 69079
21 SCREW, LEADS TO TERMINAL BLOCK (3/8") 69079
22 HOUSING, REED BLOCK (7/8") 87628F2
24 GASKET, REED BLOCK HOUSING 127754
25 REED BLOCK 87692
26 REED ASSEMBLY 19719A1
27 REED STOP 903911
28 SCREW 57583T
29 STUD, CARBURETOR MOUNTING 270372
30 CHECK VALVE, BLEED HOSE (STRAIGHT) 426585
31 ELBOW, BLEED H OSE (PRESS IN) 15133
32 TEE, BLEED HOSE 59169003
33 FITTING, BLEED HOSE (PRESS IN) 56759
34 HOSE, BLEED 9938779
35 ELBOW, REED BLOCK (45 DEG.) 782792
36 ELBOW, REED BLOCK (90 DEG.) 996642
37 TEE, REED BLOCK 8585531
38 HOSE, REED BLOCK (2-3/4"-4") 78892 14
39 FITTING, PULSE HOSE 54090
40 HOSE, PULSE (6-3/4") 90729 25
41 CHECK VALVE, BLEED HOSE (PRESS-IN) 426233
42 ELBOW, REED BLOCK (WITH 1/16" BARB) - 90 DEG. 93890
43 TEE, REED BLOCK (WITH 1/16" BARB) 93891
- GASKET SET 89221A80



Schematic Object Key : 17

Product Description : SCREW, (.375-16 x 2.500)

Title : Mercruiser Model 3.0L GM 181 I/L4 1999 +UP

Category: Gas; Others; 3.0L GM 181 I/L4 1999 +UP; 1A020544 & Up; Intake / Exhaust Manifold


Quick Overview

MERCURY_668631

SKU : 668631

PRE: MER

BRAND: MERCURY

COMPANY: Mercury/MerCruiser/Mariner/Force

Returns Policy

All returns must be authorized. Items returned prior authorization will not be accepted.

Defective new equipment may be returned for warranty repair/exchange to us within five (5) days of the shipment receipt date.  After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer.  Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to a repair charge. 

Non-Defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returns in which there is no original packaging, missing accessories, damage or visible signs of usage of the item.  A restocking fee of up to 25% of purchase price may apply.  Special orders and dangerous goods are non-returnable.

**There's a 20% Restocking Fee on All Returned Palmgren Products in Original Packaging

To get your RMA, simply call (800) 364-4637 for a return authorization number or email sales@palmerpower.com .

(Do not write anything on the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.) Please include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty days.

To check the status of your return, please email us at sales@palmerpower.com. Please be sure to include your RMA number. For more information please check our FAQ page.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

Boat Services & Repairs in Houston

We will service your boat whether you bought it from us or not. Our award-winning boat service department has a full-time staff of seasoned, factory-certified technicians dedicated to ensuring that your boat runs well for years to come. Our team is trained to correctly diagnose issues, advise you of any developing problems, and address any unique service issues your boat may require. Whether you need complex engine work and repairs, canvas and upholstery, boat tune Up, electronics installation or repair, or boat detailing, our technicians will work quickly to keep you out of the shop and on the water. Not only does our service department provide the highest quality service, we also have a large parts department for the do-it-yourself types. Ask about our inventory of parts and aftermarket additions to make your own repairs or upgrades.

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Frequently Asked Questions

  • How do I request a quote?
    To request a quote for pricing on any Palmer Power's products, please see our request a quote page. Fill out and submit our quote form and one of our representatives will contact you when your quote is ready.
  • Do you have any Minimum Order Restriction?
    Palmer Power Does not have any Minimum Order Restriction.
  • Will my order be subject to sales tax?
    Estimated state sales tax will appear within your shopping cart for all shipments within the United states unless a signed official state tax exemption certificate is furnished to Palmer Power.
  • How do I check my Order Status?
    To check the status of an online order, email sales@palmerpower.com. Please be sure to include your order number.
  • How do I Return items?

    All returns must be authorized. Items returned prior authorization will not be accepted. International customers must ship any returns to us freight and duty prepaid. Return freight charges for International shipments will be the responsibility of the customer.

    Defective new equipment may be returned for warranty repair/exchange to us within five (5) days of the shipment receipt date. After five (5) days, returns will be handled by direct contact and in accordance with the warranty terms of the item's manufacturer. Items that have malfunctioned due to mishandling, electrical overload, etc., will be subject to a repair charge.

    Non-Defective new equipment will be authorized for return within five (5) days of the shipment receipt date if the equipment is still in new, re-sellable condition with the original manual(s), accessories, packing material and carton. We reserve the right to reject returns in which there is no original packaging, missing accessories, damage or visible signs of usage of the item. A restocking fee of up to 25% of purchase price may apply. Special orders and dangerous goods are non-returnable.

    (Do not write anything on the manufacturer's original package or use as a shipping carton. Include all accessories, manuals and warranties.) Please include a copy of the packing list or invoice with a reason for the return. Your return authorization number is valid for thirty days.

  • What payment options do I have?

    Palmer Power accepts a variety of payment options for your convenience. For prepayment, we accept all major credit cards (Visa, MasterCard, Discover and American Express), Purchase Orders, and international wire transfers. We also offer credit terms to existing customers.

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